diff --git a/CHANGELOG.md b/CHANGELOG.md
index a69c72e25..37e8bf0f4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -22,6 +22,7 @@
 
 ### Server
 - リモートユーザーのチャート生成を無効にするオプションを追加
+- 空のアンテナが作成できるのを修正
 
 ## 13.10.2
 
diff --git a/packages/backend/src/server/api/endpoints/antennas/create.ts b/packages/backend/src/server/api/endpoints/antennas/create.ts
index d147ddb7f..9ee311ace 100644
--- a/packages/backend/src/server/api/endpoints/antennas/create.ts
+++ b/packages/backend/src/server/api/endpoints/antennas/create.ts
@@ -79,7 +79,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 		private globalEventService: GlobalEventService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
-			if (ps.keywords.length === 0) {
+			if ((ps.keywords.length === 0) || (ps.keywords[0].filter(x => x !== '').length === 0)) {
 				throw new Error('invalid param');
 			}