diff --git a/admin/src/app/admin/workspaces/[id]/page.tsx b/admin/src/app/admin/workspaces/[id]/page.tsx
index a805b62..bb99cea 100644
--- a/admin/src/app/admin/workspaces/[id]/page.tsx
+++ b/admin/src/app/admin/workspaces/[id]/page.tsx
@@ -176,7 +176,7 @@ export default function WorkspaceDetailPage() {
         setAddMemberError(data.error || "搜索失败，请重试");
         return;
       }
-      const existingIds = new Set(members.map(m => m.userId));
+      const existingIds = new Set(members.map(m => m.uid));
       setSearchUsers((data.users || []).filter((u: { uid: string }) => !existingIds.has(u.uid)));
       setAddMemberError(""); // clear previous errors
     } catch {