diff --git a/src/ui/display.h b/src/ui/display.h
index be4b97b72..e01574b5c 100644
--- a/src/ui/display.h
+++ b/src/ui/display.h
@@ -73,7 +73,7 @@ namespace ui {
     void handleWindowZOrder(Window* window);
     const std::vector<Window*>& getWindows() const { return m_windows; }
 
-    gfx::Size Display::workareaSizeUIScale();
+    gfx::Size workareaSizeUIScale();
 
   private:
     Display* m_parentDisplay;