diff --git a/contrib/hiredis/Hiredis.cc b/contrib/hiredis/Hiredis.cc
index 07541d346..9fd723e97 100644
--- a/contrib/hiredis/Hiredis.cc
+++ b/contrib/hiredis/Hiredis.cc
@@ -165,6 +165,8 @@ void Hiredis::disconnectCallback(int status)
   {
     disconnectCb_(this, status);
   }
+
+  context_ = NULL;
 }
 
 void Hiredis::addRead(void* privdata)