diff --git a/CMakeLists.txt b/CMakeLists.txt
index a8605fa40..edc365163 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -16,6 +16,8 @@ SET(PACKAGE_NAME "libnfc")
 SET(PACKAGE_VERSION ${VERSION})
 SET(PACKAGE_STRING "${PACKAGE_NAME} ${PACKAGE_VERSION}")
 
+SET(CMAKE_C_STANDARD 99)
+
 # config.h
 IF(WIN32)
   SET(LIBNFC_SYSCONFDIR "./config" CACHE PATH "libnfc configuration directory")
@@ -52,9 +54,7 @@ ENDIF(LIBNFC_ENVVARS)
 SET(LIBNFC_DEBUG_MODE OFF CACHE BOOL "Debug mode")
 IF(LIBNFC_DEBUG_MODE)
   ADD_DEFINITIONS(-DDEBUG)
-  SET(CMAKE_C_FLAGS "-g3 ${CMAKE_C_FLAGS}")
   SET(WIN32_MODE "debug")
-  SET(CMAKE_RC_FLAGS "-D_DEBUG ${CMAKE_RC_FLAGS}")
 ELSE(LIBNFC_DEBUG_MODE)
   SET(WIN32_MODE "release")
 ENDIF(LIBNFC_DEBUG_MODE)
@@ -93,12 +93,6 @@ IF(NOT DEFINED SHARE_INSTALL_PREFIX)
   SET(SHARE_INSTALL_PREFIX share)
 ENDIF(NOT DEFINED SHARE_INSTALL_PREFIX)
 
-# Additonnal GCC flags
-IF(CMAKE_COMPILER_IS_GNUCC)
-  # Make sure we will not miss some warnings ;)
-  SET(CMAKE_C_FLAGS "-Wall -pedantic -std=c99 ${CMAKE_C_FLAGS}")
-ENDIF(CMAKE_COMPILER_IS_GNUCC)
-
 # Workarounds for libusb in C99
 ADD_DEFINITIONS(-Du_int8_t=uint8_t -Du_int16_t=uint16_t)
 
@@ -152,20 +146,20 @@ ENDIF(NOT WIN32)
 INCLUDE(LibnfcDrivers)
 
 IF(${CMAKE_SYSTEM_NAME} MATCHES "Linux")
-    IF(I2C_REQUIRED)
-        # Inspired from http://cmake.3232098.n2.nabble.com/RFC-cmake-analog-to-AC-SEARCH-LIBS-td7585423.html
-        INCLUDE (CheckFunctionExists)
-        INCLUDE (CheckLibraryExists)
-        CHECK_FUNCTION_EXISTS (clock_gettime HAVE_CLOCK_GETTIME)
-        IF (NOT HAVE_CLOCK_GETTIME)
-            CHECK_LIBRARY_EXISTS (rt clock_gettime "" HAVE_CLOCK_GETTIME_IN_RT)
-            IF (HAVE_CLOCK_GETTIME_IN_RT)
-                SET(LIBRT_FOUND TRUE)
-                SET(LIBRT_LIBRARIES "rt")
-            ENDIF (HAVE_CLOCK_GETTIME_IN_RT)
-        ENDIF (NOT HAVE_CLOCK_GETTIME)
-    ENDIF(I2C_REQUIRED)
-  ENDIF(${CMAKE_SYSTEM_NAME} MATCHES "Linux")
+  IF(I2C_REQUIRED)
+    # Inspired from http://cmake.3232098.n2.nabble.com/RFC-cmake-analog-to-AC-SEARCH-LIBS-td7585423.html
+    INCLUDE (CheckFunctionExists)
+    INCLUDE (CheckLibraryExists)
+    CHECK_FUNCTION_EXISTS (clock_gettime HAVE_CLOCK_GETTIME)
+    IF (NOT HAVE_CLOCK_GETTIME)
+      CHECK_LIBRARY_EXISTS (rt clock_gettime "" HAVE_CLOCK_GETTIME_IN_RT)
+      IF (HAVE_CLOCK_GETTIME_IN_RT)
+        SET(LIBRT_FOUND TRUE)
+        SET(LIBRT_LIBRARIES "rt")
+      ENDIF (HAVE_CLOCK_GETTIME_IN_RT)
+    ENDIF (NOT HAVE_CLOCK_GETTIME)
+  ENDIF(I2C_REQUIRED)
+ENDIF(${CMAKE_SYSTEM_NAME} MATCHES "Linux")
 
 IF(PCSC_INCLUDE_DIRS)
   INCLUDE_DIRECTORIES(${PCSC_INCLUDE_DIRS})
diff --git a/contrib/win32/libnfc/buses/uart.c b/contrib/win32/libnfc/buses/uart.c
index ba7ddfe80..6b2478d5d 100644
--- a/contrib/win32/libnfc/buses/uart.c
+++ b/contrib/win32/libnfc/buses/uart.c
@@ -45,9 +45,7 @@
 #define LOG_GROUP    NFC_LOG_GROUP_COM
 #define LOG_CATEGORY "libnfc.bus.uart_win32"
 
-// Handle platform specific includes
 #include "contrib/windows.h"
-#define delay_ms( X ) Sleep( X )
 
 struct serial_port_windows {
   HANDLE  hPort;                // Serial port handle
diff --git a/examples/nfc-emulate-tag.c b/examples/nfc-emulate-tag.c
index a2adbe67f..a3f96e265 100644
--- a/examples/nfc-emulate-tag.c
+++ b/examples/nfc-emulate-tag.c
@@ -189,11 +189,7 @@ main(int argc, char *argv[])
   (void) argc;
   const char *acLibnfcVersion;
 
-#ifdef WIN32
-  signal(SIGINT, (void (__cdecl *)(int)) intr_hdlr);
-#else
   signal(SIGINT, intr_hdlr);
-#endif
 
   nfc_init(&context);
   if (context == NULL) {
diff --git a/examples/nfc-emulate-uid.c b/examples/nfc-emulate-uid.c
index 690388ed8..ff29d879f 100644
--- a/examples/nfc-emulate-uid.c
+++ b/examples/nfc-emulate-uid.c
@@ -130,11 +130,7 @@ main(int argc, char *argv[])
     }
   }
 
-#ifdef WIN32
-  signal(SIGINT, (void (__cdecl *)(int)) intr_hdlr);
-#else
   signal(SIGINT, intr_hdlr);
-#endif
 
   nfc_init(&context);
   if (context == NULL) {
diff --git a/examples/nfc-poll.c b/examples/nfc-poll.c
index 4cea5d635..2acacc60f 100644
--- a/examples/nfc-poll.c
+++ b/examples/nfc-poll.c
@@ -44,7 +44,6 @@
 #  include "config.h"
 #endif // HAVE_CONFIG_H
 
-#include <err.h>
 #include <inttypes.h>
 #include <signal.h>
 #include <stdio.h>
diff --git a/examples/nfc-relay.c b/examples/nfc-relay.c
index e03c8cd20..6c0948c8e 100644
--- a/examples/nfc-relay.c
+++ b/examples/nfc-relay.c
@@ -109,11 +109,7 @@ main(int argc, char *argv[])
   // Display libnfc version
   printf("%s uses libnfc %s\n", argv[0], acLibnfcVersion);
 
-#ifdef WIN32
-  signal(SIGINT, (void (__cdecl *)(int)) intr_hdlr);
-#else
   signal(SIGINT, intr_hdlr);
-#endif
 
   nfc_context *context;
   nfc_init(&context);
diff --git a/examples/nfc-st25tb.c b/examples/nfc-st25tb.c
index 7eb5deeb6..47c7263fc 100644
--- a/examples/nfc-st25tb.c
+++ b/examples/nfc-st25tb.c
@@ -64,11 +64,7 @@
 #include <string.h>
 #include <nfc/nfc.h>
 
-#if defined(WIN32) /* mingw compiler */
-#include <getopt.h>
-#endif
-
-#define ST25TB_SR_BLOCK_MAX_SIZE	((uint8_t) 4) // for static arrays
+#define ST25TB_SR_BLOCK_MAX_SIZE	((size_t) 4) // for static arrays
 typedef void(*get_info_specific) (uint8_t * systemArea);
 
 typedef struct _st_data {
diff --git a/examples/pn53x-diagnose.c b/examples/pn53x-diagnose.c
index b5b0e5252..50f5169b7 100644
--- a/examples/pn53x-diagnose.c
+++ b/examples/pn53x-diagnose.c
@@ -43,7 +43,6 @@
 #  include "config.h"
 #endif // HAVE_CONFIG_H
 
-#include <err.h>
 #include <stdlib.h>
 #include <string.h>
 
diff --git a/examples/pn53x-tamashell.c b/examples/pn53x-tamashell.c
index 52beee16a..d384098a1 100644
--- a/examples/pn53x-tamashell.c
+++ b/examples/pn53x-tamashell.c
@@ -54,24 +54,11 @@
 #include <ctype.h>
 #include <time.h>
 
-#ifndef _WIN32
-#  include <time.h>
-#  define msleep(x) do { \
-    struct timespec xsleep; \
-    xsleep.tv_sec = x / 1000; \
-    xsleep.tv_nsec = (x - xsleep.tv_sec * 1000) * 1000 * 1000; \
-    nanosleep(&xsleep, NULL); \
-  } while (0)
-#else
-#  include <winbase.h>
-#  define msleep Sleep
-#endif
-
-
 #include <nfc/nfc.h>
 
 #include "utils/nfc-utils.h"
 #include "libnfc/chips/pn53x.h"
+#include "libnfc/nfc-internal.h"
 
 #define MAX_FRAME_LEN 264
 
diff --git a/libnfc/buses/i2c.c b/libnfc/buses/i2c.c
index dc1ad1f02..b400bc7e8 100644
--- a/libnfc/buses/i2c.c
+++ b/libnfc/buses/i2c.c
@@ -41,10 +41,10 @@
 #include <sys/stat.h>
 #include <sys/time.h>
 #include <sys/types.h>
-#include <ctype.h>
 #include <dirent.h>
 #include <errno.h>
 #include <fcntl.h>
+#include <inttypes.h>
 #include <limits.h>
 #include <stdio.h>
 #include <termios.h>
diff --git a/libnfc/buses/spi.c b/libnfc/buses/spi.c
index 0e68f9b47..4a2bc308c 100644
--- a/libnfc/buses/spi.c
+++ b/libnfc/buses/spi.c
@@ -45,7 +45,6 @@
 #include <sys/types.h>
 #include <ctype.h>
 #include <dirent.h>
-#include <errno.h>
 #include <fcntl.h>
 #include <limits.h>
 #include <stdio.h>
diff --git a/libnfc/buses/uart.c b/libnfc/buses/uart.c
index ffe64aa56..1e8054b97 100644
--- a/libnfc/buses/uart.c
+++ b/libnfc/buses/uart.c
@@ -57,22 +57,6 @@
 #define LOG_GROUP    NFC_LOG_GROUP_COM
 #define LOG_CATEGORY "libnfc.bus.uart"
 
-#ifndef _WIN32
-// Needed by sleep() under Unix
-#  include <unistd.h>
-#  include <time.h>
-#  define msleep(x) do { \
-    struct timespec xsleep; \
-    xsleep.tv_sec = x / 1000; \
-    xsleep.tv_nsec = (x - xsleep.tv_sec * 1000) * 1000 * 1000; \
-    nanosleep(&xsleep, NULL); \
-  } while (0)
-#else
-// Needed by Sleep() under Windows
-#  include <winbase.h>
-#  define msleep Sleep
-#endif
-
 #  if defined(__APPLE__)
 const char *serial_ports_device_radix[] = { "tty.SLAB_USBtoUART", "tty.usbserial", "tty.usbmodem", NULL };
 #  elif defined (__FreeBSD__) || defined (__OpenBSD__) || defined(__FreeBSD_kernel__)
diff --git a/libnfc/chips/pn53x.c b/libnfc/chips/pn53x.c
index e5d9d9406..a2c72d4f5 100644
--- a/libnfc/chips/pn53x.c
+++ b/libnfc/chips/pn53x.c
@@ -50,6 +50,9 @@
 #define LOG_CATEGORY "libnfc.chip.pn53x"
 #define LOG_GROUP NFC_LOG_GROUP_CHIP
 
+#define SAK_ISO14443_4_COMPLIANT 0x20
+#define SAK_ISO18092_COMPLIANT   0x40
+
 const uint8_t pn53x_ack_frame[] = { 0x00, 0x00, 0xff, 0x00, 0xff, 0x00 };
 const uint8_t pn53x_nack_frame[] = { 0x00, 0x00, 0xff, 0xff, 0x00, 0x00 };
 static const uint8_t pn53x_error_frame[] = { 0x00, 0x00, 0xff, 0x01, 0xff, 0x7f, 0x81, 0x00 };
@@ -2367,8 +2370,6 @@ pn53x_initiator_target_is_present(struct nfc_device *pnd, const nfc_target *pnt)
   return pnd->last_error = ret;
 }
 
-#define SAK_ISO14443_4_COMPLIANT 0x20
-#define SAK_ISO18092_COMPLIANT   0x40
 int
 pn53x_target_init(struct nfc_device *pnd, nfc_target *pnt, uint8_t *pbtRx, const size_t szRxLen, int timeout)
 {
diff --git a/libnfc/drivers/acr122_usb.c b/libnfc/drivers/acr122_usb.c
index fc545014b..4041e5640 100644
--- a/libnfc/drivers/acr122_usb.c
+++ b/libnfc/drivers/acr122_usb.c
@@ -697,7 +697,7 @@ acr122_usb_receive(nfc_device *pnd, uint8_t *pbtData, const size_t szDataLen, co
   len = abtRxBuf[offset++];
   if ((abtRxBuf[offset] != 0x00) && (abtRxBuf[offset + 1] != 0x00) && (abtRxBuf[offset + 2] != 0x00)) {
     log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_ERROR, "%s", "Not implemented: only 1-byte length is supported, please report this bug with a full trace.");
-    pnd->last_error = NFC_EIO;
+    pnd->last_error = NFC_ENOTIMPL;
     return pnd->last_error;
   }
   offset += 3;
diff --git a/libnfc/drivers/acr122s.c b/libnfc/drivers/acr122s.c
index 7a6a9f45a..d97752211 100644
--- a/libnfc/drivers/acr122s.c
+++ b/libnfc/drivers/acr122s.c
@@ -225,7 +225,7 @@ acr122s_send_frame(nfc_device *pnd, uint8_t *frame, int timeout)
 }
 
 /**
- * Receive response frame after a successfull acr122s_send_command().
+ * Receive response frame after a successful acr122s_send_command().
  *
  * @param: pnd is target nfc device
  * @param: frame is buffer where received response frame will be stored
@@ -272,7 +272,7 @@ acr122s_recv_frame(nfc_device *pnd, uint8_t *frame, size_t frame_size, void *abo
 #define APDU_OVERHEAD (FRAME_OVERHEAD + 5)
 
 /**
- * Convert host uint32 to litle endian uint32
+ * Convert host uint32 to little endian uint32
  */
 static uint32_t
 le32(uint32_t val)
@@ -417,7 +417,7 @@ acr122s_scan(const nfc_context *context, nfc_connstring connstrings[], const siz
   size_t device_found = 0;
   serial_port sp;
   char **acPorts = uart_list_ports();
-  const char *acPort;
+  char *acPort;
   int     iDevice = 0;
 
   while ((acPort = acPorts[iDevice++])) {
@@ -621,7 +621,6 @@ acr122s_open(const nfc_context *context, const nfc_connstring connstring)
   }
   CHIP_DATA(pnd)->type = PN532;
 
-#if 1
   // Retrieve firmware version
   char version[DEVICE_NAME_LENGTH];
   if (acr122s_get_firmware_version(pnd, version, sizeof(version)) != 0) {
@@ -637,7 +636,7 @@ acr122s_open(const nfc_context *context, const nfc_connstring connstring)
     return NULL;
   }
 
-  snprintf(pnd->name, sizeof(pnd->name), "%s", version);
+  strncpy(pnd->name, version, DEVICE_NAME_LENGTH);
 
   // Activate SAM before operating
   if (acr122s_activate_sam(pnd) != 0) {
@@ -645,7 +644,6 @@ acr122s_open(const nfc_context *context, const nfc_connstring connstring)
     acr122s_close(pnd);
     return NULL;
   }
-#endif
 
   if (pn53x_init(pnd) < 0) {
     log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_ERROR, "%s", "Failed initializing PN532 chip.");
diff --git a/libnfc/drivers/arygon.c b/libnfc/drivers/arygon.c
index acaab4652..1a95f8f30 100644
--- a/libnfc/drivers/arygon.c
+++ b/libnfc/drivers/arygon.c
@@ -103,7 +103,7 @@ arygon_scan(const nfc_context *context, nfc_connstring connstrings[], const size
   size_t device_found = 0;
   serial_port sp;
   char **acPorts = uart_list_ports();
-  const char *acPort;
+  char *acPort;
   int     iDevice = 0;
 
   while ((acPort = acPorts[iDevice++])) {
diff --git a/libnfc/drivers/pcsc.c b/libnfc/drivers/pcsc.c
index 106d99ac4..5b087cca5 100644
--- a/libnfc/drivers/pcsc.c
+++ b/libnfc/drivers/pcsc.c
@@ -67,17 +67,12 @@
 #define SCARD_ATTR_VENDOR_IFD_SERIAL_NO SCARD_ATTR_VALUE(SCARD_CLASS_VENDOR_INFO, 0x0103) /**< Vendor-supplied interface device serial number. */
 #define SCARD_ATTR_ICC_TYPE_PER_ATR SCARD_ATTR_VALUE(SCARD_CLASS_ICC_STATE, 0x0304) /**< Single byte indicating smart card type */
 #else
-#ifndef _Win32
+#ifndef _WIN32
 #include <reader.h>
 #endif
 #include <winscard.h>
 #endif
 
-#ifdef WIN32
-#include <windows.h>
-#define usleep(x) Sleep((x + 999) / 1000)
-#endif
-
 #define PCSC_DRIVER_NAME "pcsc"
 
 #include <nfc/nfc.h>
@@ -549,7 +544,7 @@ pcsc_open(const nfc_context *context, const nfc_connstring connstring)
   DRIVER_DATA(pnd)->dwShareMode = SCARD_SHARE_DIRECT;
 
   // Done, we found the reader we are looking for
-  snprintf(pnd->name, sizeof(pnd->name), "%s", ndd.pcsc_device_name);
+  strcpy(pnd->name, ndd.pcsc_device_name);
 
   pnd->driver = &pcsc_driver;
 
@@ -713,14 +708,14 @@ static const char *stringify_error(const LONG pcscError)
       msg = "Feature not supported.";
       break;
     default:
-      (void)snprintf(strError, sizeof(strError) - 1, "Unknown error: 0x%08lX",
+      snprintf(strError, sizeof(strError) - 1, "Unknown error: 0x%08lX",
                      pcscError);
   };
 
   if (msg)
-    (void)strncpy(strError, msg, sizeof(strError));
+    strncpy(strError, msg, sizeof(strError));
   else
-    (void)snprintf(strError, sizeof(strError) - 1, "Unknown error: 0x%08lX",
+    snprintf(strError, sizeof(strError) - 1, "Unknown error: 0x%08lX",
                    pcscError);
 
   /* add a null byte */
@@ -826,7 +821,7 @@ static int pcsc_initiator_transceive_bytes(struct nfc_device *pnd, const uint8_t
         pnd->last_error = pcsc_transmit(pnd, apdu_data, send_size, resp, &resp_len);
         memset(apdu_data, 0, sizeof(apdu_data));
         memset(resp, 0, sizeof(resp));
-        usleep(500000);//delay 500ms
+        msleep(500);
       }
       // then auth
       apdu_data[0] = 0xFF;
diff --git a/libnfc/drivers/pn532_spi.c b/libnfc/drivers/pn532_spi.c
index 39a8b51ab..4d243c588 100644
--- a/libnfc/drivers/pn532_spi.c
+++ b/libnfc/drivers/pn532_spi.c
@@ -54,22 +54,6 @@
 #define LOG_CATEGORY "libnfc.driver.pn532_spi"
 #define LOG_GROUP    NFC_LOG_GROUP_DRIVER
 
-#ifndef _WIN32
-// Needed by sleep() under Unix
-#  include <unistd.h>
-#  include <time.h>
-#  define msleep(x) do { \
-    struct timespec xsleep; \
-    xsleep.tv_sec = x / 1000; \
-    xsleep.tv_nsec = (x - xsleep.tv_sec * 1000) * 1000 * 1000; \
-    nanosleep(&xsleep, NULL); \
-  } while (0)
-#else
-// Needed by Sleep() under Windows
-#  include <winbase.h>
-#  define msleep Sleep
-#endif
-
 // Internal data structs
 const struct pn53x_io pn532_spi_io;
 struct pn532_spi_data {
diff --git a/libnfc/drivers/pn532_uart.c b/libnfc/drivers/pn532_uart.c
index d82051d7f..680b80684 100644
--- a/libnfc/drivers/pn532_uart.c
+++ b/libnfc/drivers/pn532_uart.c
@@ -77,7 +77,7 @@ pn532_uart_scan(const nfc_context *context, nfc_connstring connstrings[], const
   size_t device_found = 0;
   serial_port sp;
   char **acPorts = uart_list_ports();
-  const char *acPort;
+  char *acPort;
   int     iDevice = 0;
 
   while ((acPort = acPorts[iDevice++])) {
diff --git a/libnfc/drivers/pn53x_usb.c b/libnfc/drivers/pn53x_usb.c
index 52c40f082..8d80c82bd 100644
--- a/libnfc/drivers/pn53x_usb.c
+++ b/libnfc/drivers/pn53x_usb.c
@@ -257,7 +257,11 @@ pn53x_usb_get_end_points_default(struct usb_device *dev, struct pn53x_usb_data *
   return false;
 }
 
-int  pn53x_usb_ack(nfc_device *pnd);
+int
+pn53x_usb_ack(nfc_device *pnd)
+{
+  return pn53x_usb_bulk_write(DRIVER_DATA(pnd), (uint8_t *) pn53x_ack_frame, sizeof(pn53x_ack_frame), 1000);
+}
 
 // Find transfer endpoints for bulk transfers
 static void
@@ -741,12 +745,6 @@ pn53x_usb_receive(nfc_device *pnd, uint8_t *pbtData, const size_t szDataLen, con
   return len;
 }
 
-int
-pn53x_usb_ack(nfc_device *pnd)
-{
-  return pn53x_usb_bulk_write(DRIVER_DATA(pnd), (uint8_t *) pn53x_ack_frame, sizeof(pn53x_ack_frame), 1000);
-}
-
 int
 pn53x_usb_init(nfc_device *pnd)
 {
diff --git a/libnfc/nfc-internal.h b/libnfc/nfc-internal.h
index 74c05c210..6f1407315 100644
--- a/libnfc/nfc-internal.h
+++ b/libnfc/nfc-internal.h
@@ -33,13 +33,8 @@
 #define __NFC_INTERNAL_H__
 
 #include <stdbool.h>
-#include <err.h>
-#if !defined(_MSC_VER)
-#  include <sys/time.h>
-#endif
 
 #include "nfc/nfc.h"
-
 #include "log.h"
 
 /**
@@ -63,6 +58,22 @@
 #define MAX(a,b) (((a) > (b)) ? (a) : (b))
 #endif
 
+#ifndef _WIN32
+// Needed by sleep() under Unix
+#  include <unistd.h>
+#  include <time.h>
+#  define msleep(x) do { \
+    struct timespec xsleep; \
+    xsleep.tv_sec = x / 1000; \
+    xsleep.tv_nsec = (x - xsleep.tv_sec * 1000) * 1000 * 1000; \
+    nanosleep(&xsleep, NULL); \
+  } while (0)
+#else
+// Needed by Sleep() under Windows
+#  include <windows.h>
+#  define msleep Sleep
+#endif
+
 /*
  * Buffer management macros.
  *
diff --git a/utils/nfc-list.c b/utils/nfc-list.c
index bb6aaef9b..ebc53bc35 100644
--- a/utils/nfc-list.c
+++ b/utils/nfc-list.c
@@ -44,7 +44,6 @@
 #  include "config.h"
 #endif // HAVE_CONFIG_H
 
-#include <err.h>
 #include <stdio.h>
 #include <stddef.h>
 #include <stdlib.h>
diff --git a/utils/nfc-mfclassic.c b/utils/nfc-mfclassic.c
index 244af45cd..0e9c2f6ab 100644
--- a/utils/nfc-mfclassic.c
+++ b/utils/nfc-mfclassic.c
@@ -50,7 +50,6 @@
 #include <stdint.h>
 #include <stddef.h>
 #include <stdbool.h>
-
 #include <string.h>
 #include <ctype.h>
 
diff --git a/utils/nfc-read-forum-tag3.c b/utils/nfc-read-forum-tag3.c
index 52c6c2f8d..890cecd1c 100644
--- a/utils/nfc-read-forum-tag3.c
+++ b/utils/nfc-read-forum-tag3.c
@@ -62,10 +62,6 @@
 
 #include "nfc-utils.h"
 
-#if defined(WIN32) /* mingw compiler */
-#include <getopt.h>
-#endif
-
 static nfc_device *pnd;
 static nfc_context *context;
 
diff --git a/utils/nfc-relay-picc.c b/utils/nfc-relay-picc.c
index d694f8a6c..9199edfe0 100644
--- a/utils/nfc-relay-picc.c
+++ b/utils/nfc-relay-picc.c
@@ -55,7 +55,6 @@
 #include <stdint.h>
 #include <string.h>
 #include <signal.h>
-
 #include <unistd.h>
 
 #include <nfc/nfc.h>
@@ -199,11 +198,7 @@ main(int argc, char *argv[])
   // Display libnfc version
   printf("%s uses libnfc %s\n", argv[0], acLibnfcVersion);
 
-#ifdef WIN32
-  signal(SIGINT, (void (__cdecl *)(int)) intr_hdlr);
-#else
   signal(SIGINT, intr_hdlr);
-#endif
 
   nfc_context *context;
   nfc_init(&context);
diff --git a/utils/nfc-scan-device.c b/utils/nfc-scan-device.c
index bdc100de8..24482eed4 100644
--- a/utils/nfc-scan-device.c
+++ b/utils/nfc-scan-device.c
@@ -43,7 +43,6 @@
 #  include "config.h"
 #endif // HAVE_CONFIG_H
 
-#include <err.h>
 #include <stdio.h>
 #include <stddef.h>
 #include <stdlib.h>
diff --git a/utils/nfc-utils.c b/utils/nfc-utils.c
index 72a33eda2..c9e94ac8f 100644
--- a/utils/nfc-utils.c
+++ b/utils/nfc-utils.c
@@ -38,7 +38,6 @@
  * @brief Provide some examples shared functions like print, parity calculation, options parsing.
  */
 #include <nfc/nfc.h>
-#include <err.h>
 
 #include "nfc-utils.h"