diff --git a/include/types/syscallarg.h b/include/types/syscallarg.h
index b83d5c8..0c7e7da 100644
--- a/include/types/syscallarg.h
+++ b/include/types/syscallarg.h
@@ -1,5 +1,5 @@
-#ifndef _QUARK_SYSCALLARG_H
-#define _QUARK_SYSCALLARG_H
+#ifndef QUARK_SYSCALLARG_H
+#define QUARK_SYSCALLARG_H
 
 typedef union
 {