diff --git a/extras/fixture/src/unity_fixture.c b/extras/fixture/src/unity_fixture.c
index 7e4d1e8ac2d30997fcdfc21c6a27695ffed4c4e7..79d925ee013fd67320131ebbd0165defb9910d6b 100644
--- a/extras/fixture/src/unity_fixture.c
+++ b/extras/fixture/src/unity_fixture.c
@@ -207,6 +207,9 @@ void* unity_malloc(size_t size)
     mem = (char*)&(guard[1]);
     memcpy(&mem[size], end, sizeof(end));
 
+#ifndef UNITY_FIXTURE_MALLOC_OVERRIDES_H_
+    free(guard);
+#endif
     return (void*)mem;
 }