diff --git a/pkg/addon/configpolicy/agent_addon.go b/pkg/addon/configpolicy/agent_addon.go
index 23df3164..4b818cdf 100644
--- a/pkg/addon/configpolicy/agent_addon.go
+++ b/pkg/addon/configpolicy/agent_addon.go
@@ -113,7 +113,7 @@ func getValues(cluster *clusterv1.ManagedCluster,
 
 	// Set the default namespace for OperatorPolicy for OpenShift 4
 	if cluster.Labels["openshiftVersion-major"] == "4" {
-		userValues.OperatorPolicy["default-namespace"] = "openshift-operators"
+		userValues.OperatorPolicy["defaultNamespace"] = "openshift-operators"
 	}
 
 	annotations := addon.GetAnnotations()