diff --git a/packages/backend/src/server/api/endpoints/antennas/notes.ts b/packages/backend/src/server/api/endpoints/antennas/notes.ts
index 19e45b14c..6a6f15abc 100644
--- a/packages/backend/src/server/api/endpoints/antennas/notes.ts
+++ b/packages/backend/src/server/api/endpoints/antennas/notes.ts
@@ -35,7 +35,7 @@ export default class extends Endpoint<'antennas/notes'> {
 			});
 
 			if (antenna == null) {
-				throw new ApiError(meta.errors.noSuchAntenna);
+				throw new ApiError(this.meta.errors.noSuchAntenna);
 			}
 
 			const limit = ps.limit + (ps.untilId ? 1 : 0) + (ps.sinceId ? 1 : 0); // untilIdに指定したものも含まれるため+1