diff --git a/chart/stash/templates/cleaner.yaml b/chart/stash/templates/cleaner.yaml
index a5ad6a0a5..17ce94a8b 100644
--- a/chart/stash/templates/cleaner.yaml
+++ b/chart/stash/templates/cleaner.yaml
@@ -23,6 +23,10 @@ spec:
         command:
           - sh
           - -c
-          - "sleep 2; kubectl delete validatingwebhookconfigurations admission.stash.appscode.com || true; kubectl delete mutatingwebhookconfiguration admission.stash.appscode.com || true"
+          - "sleep 2; \
+           kubectl delete validatingwebhookconfigurations admission.stash.appscode.com || true; \
+           kubectl delete mutatingwebhookconfiguration admission.stash.appscode.com || true; \
+           kubectl delete function update-status pvc-backup pvc-restore || true; \
+           kubectl delete task pvc-backup pvc-restore"
         imagePullPolicy: {{ .Values.imagePullPolicy }}
       restartPolicy: Never
diff --git a/deploy/stash.sh b/deploy/stash.sh
index c8f30f3b6..38cb02bb6 100755
--- a/deploy/stash.sh
+++ b/deploy/stash.sh
@@ -351,8 +351,11 @@ if [ "$STASH_UNINSTALL" -eq 1 ]; then
   kubectl delete secret stash-apiserver-cert --namespace $PROMETHEUS_NAMESPACE || true
   # delete psp resources
   kubectl delete psp stash-operator-psp stash-backup-job stash-backupsession-cron stash-restore-job || true
-  # delete update-status function
-  kubectl delete function update-status || true
+  # delete default functions
+  kubectl delete function update-status pvc-backup pvc-restore || true
+  # delete default tasks
+  kubectl delete task pvc-backup pvc-restore || true
+
   echo "waiting for stash operator pod to stop running"
   for (( ; ; )); do
     pods=($(kubectl get pods --namespace $STASH_NAMESPACE -l app=stash -o jsonpath='{range .items[*]}{.metadata.name} {end}'))