diff --git a/awx/api/serializers.py b/awx/api/serializers.py
index fff5a1b75c..f223e6f7ee 100644
--- a/awx/api/serializers.py
+++ b/awx/api/serializers.py
@@ -78,7 +78,6 @@ SUMMARIZABLE_FK_FIELDS = {
     'credential': DEFAULT_SUMMARY_FIELDS + ('kind', 'cloud'),
     'cloud_credential': DEFAULT_SUMMARY_FIELDS + ('kind', 'cloud'),
     'network_credential': DEFAULT_SUMMARY_FIELDS + ('kind', 'net'),
-    'permission': DEFAULT_SUMMARY_FIELDS,
     'job': DEFAULT_SUMMARY_FIELDS + ('status', 'failed',),
     'job_template': DEFAULT_SUMMARY_FIELDS,
     'schedule': DEFAULT_SUMMARY_FIELDS + ('next_run',),