diff --git a/calc.py b/calc.py
index 758bc87..445dd6d 100644
--- a/calc.py
+++ b/calc.py
@@ -17,7 +17,7 @@ def __init__(self):
         self.window = tk.Tk()
         self.window.geometry("375x667")
         self.window.resizable(0, 0)
-        self.window.title("Calculator")
+        self.window.title("Calculator by ChatGPT")
 
         self.total_expression = ""
         self.current_expression = ""