diff --git a/argocd/apps/longhorn/values-longhorn.yaml b/argocd/apps/longhorn/values-longhorn.yaml
index 9cc6c22..e09e6f9 100644
--- a/argocd/apps/longhorn/values-longhorn.yaml
+++ b/argocd/apps/longhorn/values-longhorn.yaml
@@ -30,7 +30,7 @@ spec:
         defaultSettings:
           storageOverProvisioningPercentage: "200"
           storageMinimalAvailablePercentage: "10"
-          storageReservedPercentageForDefaultDisk: 10
+          storageReservedPercentageForDefaultDisk: "10"
           defaultReplicaCount: '{"v1":"2","v2":"2"}'
           replicaAutoBalance: "best-effort"
           disableRevisionCounter: '{"v1":"true"}'