diff --git a/docs/FAQ/FAQ.rst b/docs/FAQ/FAQ.rst
index 8ea5e9f82..1cf895123 100644
--- a/docs/FAQ/FAQ.rst
+++ b/docs/FAQ/FAQ.rst
@@ -62,6 +62,7 @@ It sees the key of the redis lock has existed in your redis db now. You can use
     > select 1
     > flushdb
 
+If the issue is not resolved, use ``key *`` to find if multiple keys exist. If so, try using ``flushall`` to clear all the keys.
 
 .. note::