diff --git a/src/unity.c b/src/unity.c
index dfab4b4..5786318 100644
--- a/src/unity.c
+++ b/src/unity.c
@@ -5,7 +5,6 @@
 ============================================================================ */
 
 #include "unity.h"
-#include <stddef.h>
 
 #ifndef UNITY_PROGMEM
 #define UNITY_PROGMEM