diff --git a/gbn/timeout_manager.go b/gbn/timeout_manager.go
index a9772a14..4f91575c 100644
--- a/gbn/timeout_manager.go
+++ b/gbn/timeout_manager.go
@@ -7,7 +7,7 @@ import (
 )
 
 const (
-	defaultHandshakeTimeout = 100 * time.Millisecond
+	defaultHandshakeTimeout = 1000 * time.Millisecond
 	defaultResendTimeout    = 1000 * time.Millisecond
 	finSendTimeout          = 1000 * time.Millisecond
 	defaultResendMultiplier = 5