diff --git a/project/src/backend/sdl/SDLWindow.h b/project/src/backend/sdl/SDLWindow.h
index 37d0aff43..f4c47c2b0 100644
--- a/project/src/backend/sdl/SDLWindow.h
+++ b/project/src/backend/sdl/SDLWindow.h
@@ -32,6 +32,7 @@ namespace lime {
 			virtual void SetIcon (ImageBuffer *imageBuffer);
 			virtual bool SetMinimized (bool minimized);
 			virtual const char* SetTitle (const char* title);
+			virtual void Alert (int count, int speed, bool stop_on_foreground);
 			
 			SDL_Window* sdlWindow;
 		
@@ -41,4 +42,4 @@ namespace lime {
 }
 
 
-#endif
\ No newline at end of file
+#endif