diff --git a/internal/analyzers/prometheus.go b/internal/analyzers/prometheus.go
index 3dbd4c9..510ea17 100644
--- a/internal/analyzers/prometheus.go
+++ b/internal/analyzers/prometheus.go
@@ -171,6 +171,10 @@ func checkPrometheusNamespaceSelectors(ctx context.Context, clientSets *k8sutil.
 
     namespaces, err := clientSets.KClient.CoreV1().Namespaces().List(ctx, metav1.ListOptions{LabelSelector: labels.SelectorFromSet(labelMap).String(),})
 
+	if err != nil {
+		return fmt.Errorf("Failed to list Namespaces: %v", err)
+	}
+
     if len(namespaces.Items) == 0 {
         return fmt.Errorf("No Namespaces match the provided selector")
     }