diff --git a/locale/en_pirate/LC_MESSAGES/django.po b/locale/en-pirate/LC_MESSAGES/django.po
similarity index 100%
rename from locale/en_pirate/LC_MESSAGES/django.po
rename to locale/en-pirate/LC_MESSAGES/django.po
diff --git a/note_kfet/settings/base.py b/note_kfet/settings/base.py
index 0a187a77..2c12d037 100644
--- a/note_kfet/settings/base.py
+++ b/note_kfet/settings/base.py
@@ -154,7 +154,7 @@ from django.utils.translation import gettext_lazy as _
 LANGUAGES = [
     ('de', _('German')),
     ('en', _('English')),
-    ('en_pirate', _('Pirate Slang')),
+    ('en-pirate', _('Pirate Slang')),
     ('es', _('Spanish')),
     ('fr', _('French')),
 ]