diff --git a/wagtailtinymce/rich_text.py b/wagtailtinymce/rich_text.py
index c61003c8..e37837ba 100644
--- a/wagtailtinymce/rich_text.py
+++ b/wagtailtinymce/rich_text.py
@@ -56,7 +56,8 @@ def getDefaultArgs(cls):
             'options': {
                 'browser_spellcheck': True,
                 'noneditable_leave_contenteditable': True,
-                'language': translation.to_locale(translation.get_language()),
+                'language': translation.to_locale(translation.get_language()) if \
+                     translation.get_language() else None,
                 'language_load': True,
             },
         }