diff --git a/Core/RotateFilter.cpp b/Core/RotateFilter.cpp
index 3caa781b..42a2d67f 100644
--- a/Core/RotateFilter.cpp
+++ b/Core/RotateFilter.cpp
@@ -1,5 +1,5 @@
+#include "stdafx.h"
 #include "RotateFilter.h"
-#pragma once
 
 RotateFilter::RotateFilter(uint32_t angle)
 {