diff --git a/src/d3d11/d3d11_state_object.h b/src/d3d11/d3d11_state_object.h
index 9eb122dc..9997d73c 100644
--- a/src/d3d11/d3d11_state_object.h
+++ b/src/d3d11/d3d11_state_object.h
@@ -1,5 +1,6 @@
 #pragma once
 
+#include "d3d11_device.h"
 #include "d3d11_context_state.h"
 #include "d3d11_device_child.h"