diff --git a/main.py b/main.py
index 714e09c..5608b66 100644
--- a/main.py
+++ b/main.py
@@ -172,7 +172,7 @@ def change():
         change = int(request.args.get("change"))
     except:
         return '<p>Error: 095</p><a href="/list">tags and user list</a>'
-    c.execute(f"SELECT * FROM users WHERE id=?", [user_id])
+    c.execute(f"SELECT * FROM users WHERE id='?'", [user_id])
     users = c.fetchall()
     if users != []:
         balance_old = users[0][2]