diff --git a/embed_video/backends.py b/embed_video/backends.py
index 0c6fc22..3247769 100644
--- a/embed_video/backends.py
+++ b/embed_video/backends.py
@@ -197,7 +197,7 @@ class VideoBackend(object):
         # Derive backend name from class name
         backend_name = self.__class__.__name__[:-7].upper()
         default = getattr(self, 'default_query', {})
-        settings_key = 'EMBED_VIDEO_{}_QUERY'.format(backend_name)
+        settings_key = 'EMBED_VIDEO_{0}_QUERY'.format(backend_name)
         return getattr(settings, settings_key, default).copy()