diff --git a/clusters/cl01tl/monitoring/kube-prometheus-stack/values.yaml b/clusters/cl01tl/monitoring/kube-prometheus-stack/values.yaml
index 36bf7629b..428a24520 100644
--- a/clusters/cl01tl/monitoring/kube-prometheus-stack/values.yaml
+++ b/clusters/cl01tl/monitoring/kube-prometheus-stack/values.yaml
@@ -154,8 +154,8 @@ kube-prometheus-stack:
                 storage: 200Gi
       volumes:
         - name: migration
-          mountPath: /migration
-          existingClaim: kube-prometheus-stack-iscsi-storage
+          persistentVolumeClaim:
+            claimName: kube-prometheus-stack-iscsi-storage
       volumeMounts:
-        - name:  kube-prometheus-stack-iscsi-storage
+        - name: migration
           mountPath: /migration