diff --git a/src/core/thread/mle.cpp b/src/core/thread/mle.cpp
index 570dbdf11..f37cdd7b4 100644
--- a/src/core/thread/mle.cpp
+++ b/src/core/thread/mle.cpp
@@ -3360,7 +3360,7 @@ otError Mle::HandleChildIdResponse(const Message &aMessage, const Ip6::MessageIn
 #endif
 
     // Parent Attach Success
-    mAttachTimer.Stop();
+
     SetStateDetached();
 
     SetLeaderData(leaderData.GetPartitionId(), leaderData.GetWeighting(), leaderData.GetLeaderRouterId());