diff --git a/Source/Core/VideoCommon/ShaderGenCommon.h b/Source/Core/VideoCommon/ShaderGenCommon.h
index edbd931db9..bec69fe7c0 100644
--- a/Source/Core/VideoCommon/ShaderGenCommon.h
+++ b/Source/Core/VideoCommon/ShaderGenCommon.h
@@ -4,6 +4,7 @@
 #pragma once
 
 #include <cstring>
+#include <functional>
 #include <iterator>
 #include <string>
 #include <type_traits>