diff --git a/src/unity.h b/src/unity.h
index 8caa785..7d8c711 100644
--- a/src/unity.h
+++ b/src/unity.h
@@ -150,10 +150,10 @@ void verifyTest(void);
 #define TEST_ASSERT_EQUAL_HEX64(expected, actual)                                                  UNITY_TEST_ASSERT_EQUAL_HEX64((expected), (actual), __LINE__, NULL)
 #define TEST_ASSERT_EQUAL_CHAR(expected, actual)                                                   UNITY_TEST_ASSERT_EQUAL_CHAR((expected), (actual), __LINE__, NULL)
 #define TEST_ASSERT_BITS(mask, expected, actual)                                                   UNITY_TEST_ASSERT_BITS((mask), (expected), (actual), __LINE__, NULL)
-#define TEST_ASSERT_BITS_HIGH(mask, actual)                                                        UNITY_TEST_ASSERT_BITS((mask), (UNITY_UINT32)(-1), (actual), __LINE__, NULL)
-#define TEST_ASSERT_BITS_LOW(mask, actual)                                                         UNITY_TEST_ASSERT_BITS((mask), (UNITY_UINT32)(0), (actual), __LINE__, NULL)
-#define TEST_ASSERT_BIT_HIGH(bit, actual)                                                          UNITY_TEST_ASSERT_BITS(((UNITY_UINT32)1 << (bit)), (UNITY_UINT32)(-1), (actual), __LINE__, NULL)
-#define TEST_ASSERT_BIT_LOW(bit, actual)                                                           UNITY_TEST_ASSERT_BITS(((UNITY_UINT32)1 << (bit)), (UNITY_UINT32)(0), (actual), __LINE__, NULL)
+#define TEST_ASSERT_BITS_HIGH(mask, actual)                                                        UNITY_TEST_ASSERT_BITS((mask), (UNITY_UINT)(-1), (actual), __LINE__, NULL)
+#define TEST_ASSERT_BITS_LOW(mask, actual)                                                         UNITY_TEST_ASSERT_BITS((mask), (UNITY_UINT)(0), (actual), __LINE__, NULL)
+#define TEST_ASSERT_BIT_HIGH(bit, actual)                                                          UNITY_TEST_ASSERT_BITS(((UNITY_UINT)1 << (bit)), (UNITY_UINT)(-1), (actual), __LINE__, NULL)
+#define TEST_ASSERT_BIT_LOW(bit, actual)                                                           UNITY_TEST_ASSERT_BITS(((UNITY_UINT)1 << (bit)), (UNITY_UINT)(0), (actual), __LINE__, NULL)
 
 /* Integer Not Equal To (of all sizes) */
 #define TEST_ASSERT_NOT_EQUAL_INT(threshold, actual)                                               UNITY_TEST_ASSERT_NOT_EQUAL_INT((threshold), (actual), __LINE__, NULL)