diff --git a/gluon/contrib/redis_session.py b/gluon/contrib/redis_session.py
index 0b05a723..14ce094c 100644
--- a/gluon/contrib/redis_session.py
+++ b/gluon/contrib/redis_session.py
@@ -242,4 +242,5 @@ end
 
 
 def release_lock(conn, lockname, identifier):
-    return RedisClient._release_script(keys=[lockname], args=[identifier])
+    return RedisClient._release_script(keys=[lockname], args=[identifier],
+            client=conn)