diff --git a/library/bits/src/commonTest/kotlin/org/kotlincrypto/bitops/bits/CounterUnitTest.kt b/library/bits/src/commonTest/kotlin/org/kotlincrypto/bitops/bits/CounterUnitTest.kt
index 82b4d0a..a104e37 100644
--- a/library/bits/src/commonTest/kotlin/org/kotlincrypto/bitops/bits/CounterUnitTest.kt
+++ b/library/bits/src/commonTest/kotlin/org/kotlincrypto/bitops/bits/CounterUnitTest.kt
@@ -62,6 +62,13 @@ class CounterUnitTest {
         }
     }
 
+    @Test
+    fun givenIncrementBy_whenIsMaxIncrement_thenDoesNotThrowException() {
+        // {Int/Long}.MAX_VALUE % incrementBy == 0
+        Counter.Bit32(Counter.Bit32.MAX_INCREMENT)
+        Counter.Bit64(Counter.Bit64.MAX_INCREMENT)
+    }
+
     @Test
     fun givenLo_whenNotFactoryIncrementBy_thenThrowsException() {
         // Would throw if 32 was not a factor of 8...