diff --git a/cJSON_Utils.c b/cJSON_Utils.c
index 9d07fac..7df4db2 100644
--- a/cJSON_Utils.c
+++ b/cJSON_Utils.c
@@ -50,7 +50,14 @@
 #include "cJSON_Utils.h"
 
 /* define our own boolean type */
+#ifdef true
+#undef true
+#endif
 #define true ((cJSON_bool)1)
+
+#ifdef false
+#undef false
+#endif
 #define false ((cJSON_bool)0)
 
 static unsigned char* cJSONUtils_strdup(const unsigned char* const string)