diff --git a/packages/backend/src/const.ts b/packages/backend/src/const.ts
index 38bb79a2d..fab369482 100644
--- a/packages/backend/src/const.ts
+++ b/packages/backend/src/const.ts
@@ -1,8 +1,8 @@
 export const MAX_NOTE_TEXT_LENGTH = 3000;
 
 export const SECOND = 1000;
-export const MINUTE = 60 * SEC;
-export const HOUR = 60 * MIN;
+export const MINUTE = 60 * SECOND;
+export const HOUR = 60 * MINUTE;
 export const DAY = 24 * HOUR;
 
 export const USER_ONLINE_THRESHOLD = 1000 * 60 * 10; // 10min