diff --git a/gcml.h b/gcml.h
index c3de6d2..dbf9ec6 100644
--- a/gcml.h
+++ b/gcml.h
@@ -1,5 +1,5 @@
-#ifndef COMMON_MACROS_H
-#define COMMON_MACROS_H
+#ifndef GCML_H
+#define GCML_H
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -426,7 +426,7 @@
 
 
 
-#endif // COMMON_MACROS_H
+#endif // GCML_H