diff --git a/src/dxvk/dxvk_platform_exts.h b/src/dxvk/dxvk_platform_exts.h
index 9982657e..f6f03067 100644
--- a/src/dxvk/dxvk_platform_exts.h
+++ b/src/dxvk/dxvk_platform_exts.h
@@ -1,3 +1,5 @@
+#pragma once
+
 #include "dxvk_extension_provider.h"
 
 namespace dxvk {
@@ -21,4 +23,4 @@ namespace dxvk {
     static DxvkPlatformExts s_instance;
   };
 
-}
\ No newline at end of file
+}