diff --git a/window/window.h b/window/window.h
index 6a32c75..12951c6 100644
--- a/window/window.h
+++ b/window/window.h
@@ -571,6 +571,9 @@ void CloseWin(void){
 }
 
 char* get_main_title(){
+	// Check if the window is valid
+	if (!IsValid()) {return "IsValid failed.";}
+	
 	return get_title_by_hand(mData);
 }