diff --git a/src/data/redis/chat.js b/src/data/redis/chat.js
index 92d088c..4a9a318 100644
--- a/src/data/redis/chat.js
+++ b/src/data/redis/chat.js
@@ -4,8 +4,8 @@
 import client from './client';
 import { PREFIX as ALLOWED_PREFIX } from './isAllowedCache';
 
-const MUTE_PREFIX = 'MUTE_PREFIX';
-const MUTEC_PREFIX = 'MUTE_PREFIXc';
+const MUTE_PREFIX = 'mute';
+const MUTEC_PREFIX = 'mutec';
 
 /*
  * check if user can send chat message in channel
diff --git a/src/data/redis/lua/allowedChat.lua b/src/data/redis/lua/allowedChat.lua
index 6e4f4da..7036ef2 100644
--- a/src/data/redis/lua/allowedChat.lua
+++ b/src/data/redis/lua/allowedChat.lua
@@ -36,7 +36,7 @@ end
 local ia = redis.call('get', KEYS[3])
 if not ia then
   ret[2] = 1
-else
+elseif tonumber(ia) > 0 then
   ret[1] = tonumber(ia)
 end
 return ret