diff --git a/dlls/extdll.h b/dlls/extdll.h
index b42abc0..1cbc657 100644
--- a/dlls/extdll.h
+++ b/dlls/extdll.h
@@ -56,9 +56,9 @@
 #endif
 
 // Misc C-runtime library headers
-#include "stdio.h"
-#include "stdlib.h"
-#include "math.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
 
 // Header file containing definition of globalvars_t and entvars_t
 typedef int	func_t;					//