diff --git a/Source/Core/DolphinWX/src/stdafx.h b/Source/Core/DolphinWX/src/stdafx.h
index 10d5c50238..78628c0281 100644
--- a/Source/Core/DolphinWX/src/stdafx.h
+++ b/Source/Core/DolphinWX/src/stdafx.h
@@ -18,6 +18,8 @@
 #ifndef __STDAFX_H_
 #define __STDAFX_H_
 
+#ifdef _WIN32
+
 // Change these values to use different versions
 #define WINVER          0x0400
 #define _WIN32_WINNT    0x0501
@@ -45,3 +47,4 @@
 
 #endif
 
+#endif