diff --git a/desmume/src/frontend/windows/display.cpp b/desmume/src/frontend/windows/display.cpp
index 61021e197..a538bb336 100644
--- a/desmume/src/frontend/windows/display.cpp
+++ b/desmume/src/frontend/windows/display.cpp
@@ -959,3 +959,12 @@ void _ServiceDisplayThreadInvocation()
 	display_invoke_function = NULL;
 	SetEvent(display_invoke_done_event);
 }
+
+void TwiddleLayer(UINT ctlid, int core, int layer)
+{
+	GPUEngineBase *gpu = ((GPUEngineID)core == GPUEngineID_Main) ? (GPUEngineBase *)GPU->GetEngineMain() : (GPUEngineBase *)GPU->GetEngineSub();
+
+	const bool newLayerState = !CommonSettings.dispLayers[core][layer];
+	gpu->SetLayerEnableState(layer, newLayerState);
+	MainWindow->checkMenu(ctlid, newLayerState);
+}
diff --git a/desmume/src/frontend/windows/display.h b/desmume/src/frontend/windows/display.h
index e43c801fa..ea3662bf5 100644
--- a/desmume/src/frontend/windows/display.h
+++ b/desmume/src/frontend/windows/display.h
@@ -104,5 +104,6 @@ FORCEINLINE void ServiceDisplayThreadInvocations()
 }
 
 void UpdateWndRects(HWND hwnd, RECT* newClientRect = NULL);
+void TwiddleLayer(UINT ctlid, int core, int layer);
 
 #endif
\ No newline at end of file
diff --git a/desmume/src/frontend/windows/main.cpp b/desmume/src/frontend/windows/main.cpp
index ff735a4f9..e96a9358e 100755
--- a/desmume/src/frontend/windows/main.cpp
+++ b/desmume/src/frontend/windows/main.cpp
@@ -3500,16 +3500,6 @@ void SaveWindowPos(HWND hwnd)
 	WritePrivateProfileInt("Video", "WindowPosY", WndY/*MainWindowRect.top*/, IniName);
 }
 
-
-static void TwiddleLayer(UINT ctlid, int core, int layer)
-{
-	GPUEngineBase *gpu = ((GPUEngineID)core == GPUEngineID_Main) ? (GPUEngineBase *)GPU->GetEngineMain() : (GPUEngineBase *)GPU->GetEngineSub();
-
-	const bool newLayerState = !CommonSettings.dispLayers[core][layer];
-	gpu->SetLayerEnableState(layer, newLayerState);
-	MainWindow->checkMenu(ctlid, newLayerState);
-}
-
 //========================================================================================
 LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
 {