diff --git a/react/src/features/tag/pages/TagManagePage.tsx b/react/src/features/tag/pages/TagManagePage.tsx
index c36b29e..89274dc 100644
--- a/react/src/features/tag/pages/TagManagePage.tsx
+++ b/react/src/features/tag/pages/TagManagePage.tsx
@@ -78,7 +78,8 @@ export default function TagManagePage() {
       const counts: Record<string, number> = {};
       let total = 0;
       for (const item of items) {
-        counts[item.service_name] = (counts[item.service_name] ?? 0) + 1;
+        const key = item.service_name ?? "미지정";
+        counts[key] = (counts[key] ?? 0) + 1;
         total++;
       }
       counts["전체"] = total;