diff --git a/tests/pkg/utils/mco_managedcluster.go b/tests/pkg/utils/mco_managedcluster.go
index a92b4e2057..a84cff1453 100644
--- a/tests/pkg/utils/mco_managedcluster.go
+++ b/tests/pkg/utils/mco_managedcluster.go
@@ -53,13 +53,15 @@ func ListManagedClusters(opt TestOptions) ([]string, error) {
 		name := metadata["name"].(string)
 		labels := metadata["labels"].(map[string]interface{})
 		if labels != nil {
-			obsControllerStr := ""
-			if obsController, ok := labels["feature.open-cluster-management.io/addon-observability-controller"]; ok {
-				obsControllerStr = obsController.(string)
-			}
-			if obsControllerStr != "unreachable" {
-				clusterNames = append(clusterNames, name)
+			if obsController, ok := labels["feature.open-cluster-management.io/addon-observability-controller"]; !ok {
+				continue
+			} else {
+				obsControllerStr := obsController.(string)
+				if obsControllerStr != "unreachable" {
+					clusterNames = append(clusterNames, name)
+				}
 			}
+
 		}
 	}