diff --git a/django/utils/translation/trans_null.py b/django/utils/translation/trans_null.py
index 0cd4c1af30..ed25cae05b 100644
--- a/django/utils/translation/trans_null.py
+++ b/django/utils/translation/trans_null.py
@@ -14,5 +14,6 @@ string_concat = lambda *strings: ''.join([str(el) for el in strings])
 activate = lambda x: None
 deactivate = install = lambda: None
 get_language = lambda: settings.LANGUAGE_CODE
+get_language_bidi = lambda: settings.LANGUAGE_CODE in settings.LANGUAGES_BIDI
 get_date_formats = lambda: (settings.DATE_FORMAT, settings.DATETIME_FORMAT, settings.TIME_FORMAT)
 get_partial_date_formats = lambda: (settings.YEAR_MONTH_FORMAT, settings.MONTH_DAY_FORMAT)