diff --git a/solvable/src/webservice/server.py b/solvable/src/webservice/server.py
index 6f4aab7..afeb601 100644
--- a/solvable/src/webservice/server.py
+++ b/solvable/src/webservice/server.py
@@ -94,7 +94,7 @@ def logout():
 @app.errorhandler(404)
 @app.route('/error')
 def error(err): # pylint: disable=unused-argument
-    return render_template('error.html', error=error), error.code
+    return render_template('error.html', error=err), err.code
 
 
 # 500 needs a separate handler, as Flask would print