diff --git a/UI/MainScreen.cpp b/UI/MainScreen.cpp
index 2b767d6325..6390d0a25e 100644
--- a/UI/MainScreen.cpp
+++ b/UI/MainScreen.cpp
@@ -424,7 +424,7 @@ UI::EventReturn GameBrowser::NavigateClick(UI::EventParams &e) {
 	return UI::EVENT_DONE;
 }
 
-void MainScreen() {
+MainScreen::MainScreen() {
 	System_SendMessage("event", "mainscreen");
 }
 
diff --git a/UI/MainScreen.h b/UI/MainScreen.h
index 8bb4a36312..2b31326f4c 100644
--- a/UI/MainScreen.h
+++ b/UI/MainScreen.h
@@ -28,7 +28,7 @@
 
 class MainScreen : public UIScreenWithBackground {
 public:
-	MainScreen() {}
+	MainScreen();
 
 	virtual bool isTopLevel() const { return true; }