diff --git a/session.go b/session.go
index d18f34171..d7a56effc 100644
--- a/session.go
+++ b/session.go
@@ -35,6 +35,7 @@ type session struct {
 	stateTimer *internal.EventTimer
 	peerTimer  *internal.EventTimer
 	sentReset  bool
+	stopOnce sync.Once
 
 	targetDefaultApplVerID string
 
@@ -87,7 +88,10 @@ func (s *session) connect(msgIn <-chan fixIn, msgOut chan<- []byte) error {
 type stopReq struct{}
 
 func (s *session) stop() {
-	s.admin <- stopReq{}
+	//stop once
+	s.stopOnce.Do(func() {
+		s.admin <- stopReq{}
+	})
 }
 
 type waitChan <-chan interface{}