diff --git a/conf/redis-shake.conf b/conf/redis-shake.conf
index 345af66..e950d3d 100644
--- a/conf/redis-shake.conf
+++ b/conf/redis-shake.conf
@@ -112,7 +112,7 @@ filter.db =
 # e.g., a;b;c
 # default is all.
 # used in `restore`, `sync` and `rump`.
-# 支持过滤key，只让指定的key通过，分号分隔
+# 支持按前缀过滤key，只让指定前缀的key通过，分号分隔
 filter.key =
 # filter given slot, multiple slots are separated by ';'.
 # e.g., 1;2;3