diff --git a/Source/Core/Core/Src/ARDecrypt.h b/Source/Core/Core/Src/ARDecrypt.h
index 5e7d536683..e48eff71e7 100644
--- a/Source/Core/Core/Src/ARDecrypt.h
+++ b/Source/Core/Core/Src/ARDecrypt.h
@@ -17,7 +17,10 @@
 #ifndef _ARDECRYPT_H_
 #define _ARDECRYPT_H_
 
+#ifdef _WIN32
 #include <windows.h>
+#endif
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>