diff --git a/interface/src/graphics/RenderEventHandler.h b/interface/src/graphics/RenderEventHandler.h
index 93f8b548d0..1c531adbad 100644
--- a/interface/src/graphics/RenderEventHandler.h
+++ b/interface/src/graphics/RenderEventHandler.h
@@ -10,6 +10,7 @@
 #ifndef hifi_RenderEventHandler_h
 #define hifi_RenderEventHandler_h
 
+#include <functional>
 #include <QEvent>
 #include <QElapsedTimer>
 #include "gl/OffscreenGLCanvas.h"
@@ -49,4 +50,4 @@ private:
     bool event(QEvent* event) override;
 };
 
-#endif // #include hifi_RenderEventHandler_h
\ No newline at end of file
+#endif // #include hifi_RenderEventHandler_h