diff --git a/boards/forms.py b/boards/forms.py
--- a/boards/forms.py
+++ b/boards/forms.py
@@ -340,7 +340,10 @@ class ThreadForm(PostForm):
                 break
 
         if not required_tag_exists:
-            raise forms.ValidationError(_('Need at least 1 required tag.'))
+            all_tags = Tag.objects.filter(required=True)
+            raise forms.ValidationError(
+                _('Need at least one of the tags: ')
+                + ', '.join([tag.name for tag in all_tags]))
 
         return tags
 
diff --git a/boards/locale/ru/LC_MESSAGES/django.mo b/boards/locale/ru/LC_MESSAGES/django.mo
index f5b2a64531591d0413a09539fafe05aa1deed0d6..85135b8a2c6c41b6ecca8b4806d5110ac6362c4b
GIT binary patch
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diff --git a/boards/locale/ru/LC_MESSAGES/django.po b/boards/locale/ru/LC_MESSAGES/django.po
--- a/boards/locale/ru/LC_MESSAGES/django.po
+++ b/boards/locale/ru/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2015-04-14 13:07+0300\n"
+"POT-Creation-Date: 2015-04-14 21:16+0300\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -120,23 +120,24 @@ msgstr "Метки"
 msgid "Inappropriate characters in tags."
 msgstr "Недопустимые символы в метках."
 
-#: forms.py:343
-msgid "Need at least 1 required tag."
-msgstr "Нужна хотя бы 1 обязательная метка."
+#: forms.py:345
+#| msgid "Need at least 1 required tag."
+msgid "Need at least one of the tags: "
+msgstr "Нужна хотя бы одна из меток: "
 
-#: forms.py:355
+#: forms.py:358
 msgid "Theme"
 msgstr "Тема"
 
-#: forms.py:356
+#: forms.py:359
 msgid "User name"
 msgstr "Имя пользователя"
 
-#: forms.py:357
+#: forms.py:360
 msgid "Time zone"
 msgstr "Часовой пояс"
 
-#: forms.py:363
+#: forms.py:366
 msgid "Inappropriate characters."
 msgstr "Недопустимые символы."
 
@@ -212,31 +213,31 @@ msgstr "Предыдущая страница"
 msgid "Next page"
 msgstr "Следующая страница"
 
-#: templates/boards/post.html:32
+#: templates/boards/post.html:25
 msgid "Open"
 msgstr "Открыть"
 
-#: templates/boards/post.html:34 templates/boards/post.html.py:38
+#: templates/boards/post.html:27 templates/boards/post.html.py:31
 msgid "Reply"
 msgstr "Ответ"
 
-#: templates/boards/post.html:43
+#: templates/boards/post.html:36
 msgid "Edit"
 msgstr "Изменить"
 
-#: templates/boards/post.html:45
+#: templates/boards/post.html:38
 msgid "Edit thread"
 msgstr "Изменить тему"
 
-#: templates/boards/post.html:75
+#: templates/boards/post.html:70
 msgid "Replies"
 msgstr "Ответы"
 
-#: templates/boards/post.html:86 templates/boards/thread.html:31
+#: templates/boards/post.html:82 templates/boards/thread.html:31
 msgid "messages"
 msgstr "сообщений"
 
-#: templates/boards/post.html:87 templates/boards/thread.html:32
+#: templates/boards/post.html:83 templates/boards/thread.html:32
 msgid "images"
 msgstr "изображений"