diff --git a/src/gfx_func.h b/src/gfx_func.h
index c6c1a46a4c..d40431ba7b 100644
--- a/src/gfx_func.h
+++ b/src/gfx_func.h
@@ -79,6 +79,7 @@ void ChangeGameSpeed(bool enable_fast_forward);
 void DrawMouseCursor();
 void ScreenSizeChanged();
 void GameSizeChanged();
+void UpdateGUIZoom();
 bool AdjustGUIZoom(bool automatic);
 void UndrawMouseCursor();
 
diff --git a/src/openttd.cpp b/src/openttd.cpp
index 495486afd9..e24a9d21fd 100644
--- a/src/openttd.cpp
+++ b/src/openttd.cpp
@@ -757,7 +757,7 @@ int openttd_main(std::span<char * const> arguments)
 	_screen.zoom = ZOOM_LVL_MIN;
 
 	/* The video driver is now selected, now initialise GUI zoom */
-	AdjustGUIZoom(false);
+	UpdateGUIZoom();
 
 	SocialIntegration::Initialize();
 	NetworkStartUp(); // initialize network-core