diff --git a/src/main/java/com/ecwid/consul/transport/AbstractHttpTransport.java b/src/main/java/com/ecwid/consul/transport/AbstractHttpTransport.java
index 4e479fda..8444cd30 100644
--- a/src/main/java/com/ecwid/consul/transport/AbstractHttpTransport.java
+++ b/src/main/java/com/ecwid/consul/transport/AbstractHttpTransport.java
@@ -5,16 +5,14 @@
 import org.apache.http.client.HttpClient;
 import org.apache.http.client.methods.*;
 import org.apache.http.entity.ByteArrayEntity;
+import org.apache.http.entity.ContentType;
 import org.apache.http.entity.StringEntity;
 import org.apache.http.util.EntityUtils;
 
 import java.io.IOException;
 import java.nio.charset.StandardCharsets;
-import java.util.ArrayList;
-import java.util.List;
 import java.util.Map;
 import java.util.logging.Logger;
-import java.util.stream.StreamSupport;
 
 public abstract class AbstractHttpTransport implements HttpTransport {
 
@@ -41,7 +39,7 @@ public HttpResponse makePutRequest(HttpRequest request) {
 		HttpPut httpPut = new HttpPut(request.getUrl());
 		addHeadersToRequest(httpPut, request.getHeaders());
 		if (request.getContent() != null) {
-			httpPut.setEntity(new StringEntity(request.getContent(), StandardCharsets.UTF_8));
+			httpPut.setEntity(new StringEntity(request.getContent(), ContentType.APPLICATION_JSON));
 		} else {
 			httpPut.setEntity(new ByteArrayEntity(request.getBinaryContent()));
 		}
diff --git a/src/main/java/com/ecwid/consul/v1/agent/AgentConsulClient.java b/src/main/java/com/ecwid/consul/v1/agent/AgentConsulClient.java
index d4af7b2f..95fd47db 100644
--- a/src/main/java/com/ecwid/consul/v1/agent/AgentConsulClient.java
+++ b/src/main/java/com/ecwid/consul/v1/agent/AgentConsulClient.java
@@ -116,9 +116,9 @@ public Response<Void> agentSetMaintenance(boolean maintenanceEnabled) {
 	@Override
 	public Response<Void> agentSetMaintenance(boolean maintenanceEnabled, String reason) {
 		UrlParameters maintenanceParameter = new SingleUrlParameters("enable", Boolean.toString(maintenanceEnabled));
-		UrlParameters reasonParamenter = reason != null ? new SingleUrlParameters("reason", reason) : null;
+		UrlParameters reasonParameter = reason != null ? new SingleUrlParameters("reason", reason) : null;
 
-		HttpResponse httpResponse = rawClient.makePutRequest("/v1/agent/maintenance", "", maintenanceParameter, reasonParamenter);
+		HttpResponse httpResponse = rawClient.makePutRequest("/v1/agent/maintenance", "", maintenanceParameter, reasonParameter);
 
 		if (httpResponse.getStatusCode() == 200) {
 			return new Response<Void>(null, httpResponse);