diff --git a/Source/Core/DolphinWX/Src/VideoInterface/InterfaceBase.h b/Source/Core/DolphinWX/Src/VideoInterface/InterfaceBase.h
index 8fa4cc1b12..0c1c438cd0 100644
--- a/Source/Core/DolphinWX/Src/VideoInterface/InterfaceBase.h
+++ b/Source/Core/DolphinWX/Src/VideoInterface/InterfaceBase.h
@@ -14,7 +14,8 @@
 
 // Official SVN repository and contact information can be found at
 // http://code.google.com/p/dolphin-emu/
-
+#ifndef _GLINTERFACEBASE_H_
+#define _GLINTERFACEBASE_H_
 class cInterfaceBase
 {
 protected:
@@ -33,4 +34,4 @@ public:
 	virtual void Update() { } 
 	virtual bool PeekMessages() { return false; }
 };
-
+#endif