diff --git a/Source/Core/VideoBackends/Metal/MTLUtil.mm b/Source/Core/VideoBackends/Metal/MTLUtil.mm
index 1ef4a4d85f..14c83b5c17 100644
--- a/Source/Core/VideoBackends/Metal/MTLUtil.mm
+++ b/Source/Core/VideoBackends/Metal/MTLUtil.mm
@@ -6,6 +6,7 @@
 #include <fstream>
 #include <string>
 
+#include <TargetConditionals.h>
 #include <spirv_msl.hpp>
 
 #include "Common/MsgHandler.h"