diff --git a/project/src/ExternalInterface.cpp b/project/src/ExternalInterface.cpp
index 673199903..1164a270e 100644
--- a/project/src/ExternalInterface.cpp
+++ b/project/src/ExternalInterface.cpp
@@ -1211,6 +1211,13 @@ namespace lime {
 		
 	}
 	
+	void lime_window_alert (double window, int count, int speed, bool stop_on_forground) {
+		
+		Window* targetWindow = (Window*)(intptr_t)window;
+		targetWindow->Alert (count, speed, stop_on_forground);
+		
+	}
+	
 	
 	DEFINE_PRIME1 (lime_application_create);
 	DEFINE_PRIME2v (lime_application_event_manager_register);
@@ -1313,6 +1320,7 @@ namespace lime {
 	DEFINE_PRIME2v (lime_window_set_icon);
 	DEFINE_PRIME2 (lime_window_set_minimized);
 	DEFINE_PRIME2 (lime_window_set_title);
+	DEFINE_PRIME4 (lime_window_alert);
 	
 	
 }
@@ -1322,4 +1330,4 @@ extern "C" int lime_register_prims () {
 	
 	return 0;
 	
-}
\ No newline at end of file
+}