diff --git a/rw.h b/rw.h
index 155515a..2ef5460 100644
--- a/rw.h
+++ b/rw.h
@@ -1,6 +1,6 @@
-#include <cstdio>
-#include <cstdlib>
-#include <cmath>
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
 
 #include "src/rwbase.h"
 #include "src/rwerror.h"