diff --git a/awx/api/serializers.py b/awx/api/serializers.py
index c6553508fa..0013975eb5 100644
--- a/awx/api/serializers.py
+++ b/awx/api/serializers.py
@@ -343,7 +343,7 @@ class BaseSerializer(serializers.ModelSerializer):
                     continue
                 summary_fields[fk] = OrderedDict()
                 for field in related_fields:
-                    if field == 'credential_type_id' and fk == 'credential' and self.version < 2:
+                    if field == 'credential_type_id' and fk == 'credential' and self.version < 2:  # TODO: remove version check in 3.3
                         continue
 
                     fval = getattr(fkval, field, None)