diff --git a/django/contrib/comments/forms.py b/django/contrib/comments/forms.py
index d497572488e..bdeac993153 100644
--- a/django/contrib/comments/forms.py
+++ b/django/contrib/comments/forms.py
@@ -173,11 +173,10 @@ class CommentDetailsForm(CommentSecurityForm):
         if settings.COMMENTS_ALLOW_PROFANITIES == False:
             bad_words = [w for w in settings.PROFANITIES_LIST if w in comment.lower()]
             if bad_words:
-                plural = len(bad_words) > 1
                 raise forms.ValidationError(ungettext(
                     "Watch your mouth! The word %s is not allowed here.",
-                    "Watch your mouth! The words %s are not allowed here.", plural) % \
-                    get_text_list(['"%s%s%s"' % (i[0], '-'*(len(i)-2), i[-1]) for i in bad_words], 'and'))
+                    "Watch your mouth! The words %s are not allowed here.", len(bad_words))
+                    % get_text_list(['"%s%s%s"' % (i[0], '-'*(len(i)-2), i[-1]) for i in bad_words], 'and'))
         return comment
 
 class CommentForm(CommentDetailsForm):