diff --git a/plinth/modules/users/forms.py b/plinth/modules/users/forms.py
index 7f6d51065..760c9abd1 100644
--- a/plinth/modules/users/forms.py
+++ b/plinth/modules/users/forms.py
@@ -66,8 +66,8 @@ class UsernameValidator(validators.RegexValidator):
 
 
 USERNAME_FIELD = forms.CharField(
-    label=ugettext_lazy('Username'),
-    max_length=150, validators=[UsernameValidator()],
+    label=ugettext_lazy('Username'), max_length=150,
+    validators=[UsernameValidator()],
     help_text=ugettext_lazy('Required. 150 characters or fewer. English '
                             'letters, digits and @/./-/_ only.'))