diff --git a/.github/workflows/tox.yml b/.github/workflows/tox.yml
index db0d70e774..d74d422172 100644
--- a/.github/workflows/tox.yml
+++ b/.github/workflows/tox.yml
@@ -116,7 +116,8 @@ jobs:
             echo "inspecting changed file: ${changed_file}";
             if [[ "${changed_file}" == "mkdocs/__init__.py" ]]; then
               echo "mkdocs version changed!";
-              git diff -G "msgid" --exit-code && git diff -G "msgstr" --exit-code;
+              git diff -G "msgid" --exit-code || exit 1
+              git diff -G "msgstr" --exit-code || exit 2
             fi
           done
         shell: bash
diff --git a/mkdocs/themes/mkdocs/404.html b/mkdocs/themes/mkdocs/404.html
index c0503d7469..6c81d2b4d0 100644
--- a/mkdocs/themes/mkdocs/404.html
+++ b/mkdocs/themes/mkdocs/404.html
@@ -5,7 +5,7 @@
     <div class="row-fluid">
       <div id="main-content" class="span12">
         <h1 id="404-page-not-found" style="text-align: center">404</h1>
-        <p style="text-align: center"><strong>{% trans %}Page not found{% endtrans %}</strong></p>
+        <p style="text-align: center"><strong>{% trans %}Page not found at all{% endtrans %}</strong></p>
       </div>
     </div>
 
diff --git a/mkdocs/themes/mkdocs/messages.pot b/mkdocs/themes/mkdocs/messages.pot
index 90db90bd43..9c22e02003 100644
--- a/mkdocs/themes/mkdocs/messages.pot
+++ b/mkdocs/themes/mkdocs/messages.pot
@@ -1,22 +1,24 @@
 # Translations template for MkDocs.
 # Copyright (C) 2021 MkDocs
 # This file is distributed under the same license as the MkDocs project.
+# FIRST AUTHOR <EMAIL@ADDRESS>, 2021.
 #
 #, fuzzy
 msgid ""
 msgstr ""
 "Project-Id-Version: MkDocs 1.2\n"
 "Report-Msgid-Bugs-To: https://github.com/mkdocs/mkdocs/issues\n"
-"POT-Creation-Date: 2021-04-08 22:44+0200\n"
-"PO-Revision-Date: YYYY-MM-DD HH:MM:SS+0000\n"
-"Last-Translator: YOUR NAME <@nickname or @email>\n"
+"POT-Creation-Date: 2021-04-26 21:56+0200\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"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=utf-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 "Generated-By: Babel 2.9.0\n"
 
 #: mkdocs/themes/mkdocs/404.html:8
-msgid "Page not found"
+msgid "Page not found at all"
 msgstr ""
 
 #: mkdocs/themes/mkdocs/base.html:107