diff --git a/ISLE/xbox_one_series/config.h b/ISLE/xbox_one_series/config.h
index f6565be2..bdfcb010 100644
--- a/ISLE/xbox_one_series/config.h
+++ b/ISLE/xbox_one_series/config.h
@@ -1,5 +1,8 @@
-#pragma once
+#ifndef XBOX_ONE_SERIES_CONFIG_H
+#define XBOX_ONE_SERIES_CONFIG_H
 
 #include "dictionary.h"
 
 void XBONE_SetupDefaultConfigOverrides(dictionary* p_dictionary);
+
+#endif // XBOX_ONE_SERIES_CONFIG_H