diff --git a/clusters/cl01tl/monitoring/kube-prometheus-stack/values.yaml b/clusters/cl01tl/monitoring/kube-prometheus-stack/values.yaml
index c02c3c307..de7f45c43 100644
--- a/clusters/cl01tl/monitoring/kube-prometheus-stack/values.yaml
+++ b/clusters/cl01tl/monitoring/kube-prometheus-stack/values.yaml
@@ -152,7 +152,6 @@ kube-prometheus-stack:
             resources:
               requests:
                 storage: 100Gi
-      volumes:
-        - name: migration
+      volumeMounts:
+        - name:  kube-prometheus-stack-iscsi-storage
           mountPath: /migration
-          existingClaim: kube-prometheus-stack-iscsi-storage