diff --git a/plugins/modules/aci_qos_dscp_class.py b/plugins/modules/aci_qos_dscp_class.py
index d314c209f..f3bbc7ba3 100644
--- a/plugins/modules/aci_qos_dscp_class.py
+++ b/plugins/modules/aci_qos_dscp_class.py
@@ -252,7 +252,7 @@
 
 
 def main():
-    new_dscp_spec = dict((k, aci_contract_dscp_spec()[k]) for k in aci_contract_dscp_spec() if k != 'aliases')
+    new_dscp_spec = dict((k, aci_contract_dscp_spec()[k]) for k in aci_contract_dscp_spec() if k != "aliases")
     argument_spec = aci_argument_spec()
     argument_spec.update(aci_annotation_spec())
     argument_spec.update(aci_owner_spec())