diff --git a/manifests/minimal-fake-pooler-deployment.yaml b/manifests/minimal-fake-pooler-deployment.yaml
index a0fcaa704..0406b195a 100644
--- a/manifests/minimal-fake-pooler-deployment.yaml
+++ b/manifests/minimal-fake-pooler-deployment.yaml
@@ -18,6 +18,7 @@ spec:
       labels:
         application: db-connection-pooler
         connection-pooler: acid-minimal-cluster-pooler
+        cluster-name: acid-minimal-cluster
     spec:
       serviceAccountName: postgres-operator
       containers: