diff --git a/participate.py b/participate.py
index 92c0d66..c64a7ea 100755
--- a/participate.py
+++ b/participate.py
@@ -1043,7 +1043,7 @@ def list_users():
   page = str(request.url_rule)
   menu = get_menu(page)
   message = check_user_info()
-  staffers = Tetawebapp_users.query.filter(is_admin==0, link_id==None).order_by(Tetawebapp_users.name).all()
+  staffers = Tetawebapp_users.query.filter(Tetawebapp_users.is_admin==0, Tetawebapp_users.link_id==None).order_by(Tetawebapp_users.name).all()
   return render_template('list_users.html', menu=menu, staffers=staffers, message=message)
 
 @app.route("/account/<ID>", methods=['GET', 'POST'])