diff --git a/Engine/source/math/mMath.h b/Engine/source/math/mMath.h
index a1e070db7..4710f6bf0 100644
--- a/Engine/source/math/mMath.h
+++ b/Engine/source/math/mMath.h
@@ -48,5 +48,8 @@
 #ifndef _MEASE_H_
 #include "math/mEase.h"
 #endif
+#ifndef MROTATION_H
+#include "math/mRotation.h"
+#endif
 
 #endif //_MMATH_H_