diff --git a/rest_framework/utils/mediatypes.py b/rest_framework/utils/mediatypes.py
index c09c29338..92f99efd2 100644
--- a/rest_framework/utils/mediatypes.py
+++ b/rest_framework/utils/mediatypes.py
@@ -74,7 +74,7 @@ class _MediaType(object):
             return 0
         elif self.sub_type == '*':
             return 1
-        elif not self.params or self.params.keys() == ['q']:
+        elif not self.params or list(self.params.keys()) == ['q']:
             return 2
         return 3