diff --git a/app/frontend/src/features/service/pages/ServiceDetailPage.tsx b/app/frontend/src/features/service/pages/ServiceDetailPage.tsx
index d03e1ef..8ab6da6 100644
--- a/app/frontend/src/features/service/pages/ServiceDetailPage.tsx
+++ b/app/frontend/src/features/service/pages/ServiceDetailPage.tsx
@@ -2232,7 +2232,7 @@ export function ServiceDetailPage() {
                             {
                               volumes: volumesForm
                                 .filter((v) => v.source.trim() && v.target.startsWith('/'))
-                                .map((v) => ({ type: v.type ?? 'volume' as const, source: v.source, target: v.target, read_only: v.read_only ?? false })),
+                                .map((v) => ({ type: v.type ?? 'volume', source: v.source, target: v.target, read_only: v.read_only ?? false })),
                             },
                             { onSuccess: () => setVolumesForm(null) },
                           )