diff --git a/src/services/logger.ts b/src/services/logger.ts
index b170be780a..c72e681d0f 100644
--- a/src/services/logger.ts
+++ b/src/services/logger.ts
@@ -103,7 +103,7 @@ export default class Logger {
 					worker: worker.toString(),
 					domain: [this.domain].concat(subDomains).map(d => d.name),
 					level: level,
-					message: message,
+					message: message.substr(0, 1000), // 1024を超えるとログが挿入できずエラーになり無限ループする
 					data: data,
 				} as Log);
 			}