diff --git a/src/index.ts b/src/index.ts
index c2994c606c..880bb5a452 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -28,7 +28,7 @@ import { Config } from './config/types';
 const clusterLog = debug('misskey:cluster');
 const ev = new Xev();
 
-if (process.env.NODE_ENV != 'production') {
+if (process.env.NODE_ENV != 'production' && process.env.DEBUG == null) {
 	debug.enable('misskey');
 }