diff --git a/include/d3dx9.h b/include/d3dx9.h
index 62319ec24dd..5d9fd5f34a0 100644
--- a/include/d3dx9.h
+++ b/include/d3dx9.h
@@ -22,7 +22,7 @@
 #include <limits.h>
 
 #include "d3d9.h"
-#include "d3dx9core.h"
 #include "d3dx9math.h"
+#include "d3dx9core.h"
 
 #endif