diff --git a/internal/mock/generator.go b/internal/mock/generator.go
index 9470f3392..b2ebbe9eb 100644
--- a/internal/mock/generator.go
+++ b/internal/mock/generator.go
@@ -859,7 +859,7 @@ func generateStorage(nodes []models.Node) []models.Storage {
 			ID:       fmt.Sprintf("%s-local", node.Name),
 			Name:     "local",
 			Node:     node.Name,
-			Instance: fmt.Sprintf("pve-%s", node.Name),
+			Instance: node.Instance,
 			Type:     "dir",
 			Status:   "available",
 			Total:    localTotal,
@@ -906,7 +906,7 @@ func generateStorage(nodes []models.Node) []models.Storage {
 			ID:       fmt.Sprintf("%s-local-zfs", node.Name),
 			Name:     "local-zfs",
 			Node:     node.Name,
-			Instance: fmt.Sprintf("pve-%s", node.Name),
+			Instance: node.Instance,
 			Type:     "zfspool",
 			Status:   "available",
 			Total:    zfsTotal,
@@ -931,7 +931,7 @@ func generateStorage(nodes []models.Node) []models.Storage {
 				ID:       fmt.Sprintf("%s-%s", node.Name, storageName),
 				Name:     storageName,
 				Node:     node.Name,
-				Instance: fmt.Sprintf("pve-%s", node.Name),
+				Instance: node.Instance,
 				Type:     storageType,
 				Status:   "available",
 				Total:    total,