diff --git a/ojusomap/settings.py b/ojusomap/settings.py
index a12c158..9c843f0 100644
--- a/ojusomap/settings.py
+++ b/ojusomap/settings.py
@@ -179,7 +179,7 @@ USE_L10N = True
 USE_TZ = True
 
 LANGUAGES = [
-    ('en_GB', _('English (British)')),
+    ('en-gb', _('English (British)')),
     ('fr', _('French')),
     ('es', _('Spanish')),
 ]