Index: crypto/openssh/channels.c
===================================================================
--- crypto/openssh/channels.c	(revision 330631)
+++ crypto/openssh/channels.c	(working copy)
@@ -1922,7 +1922,8 @@
 {
 	if (c->type == SSH_CHANNEL_OPEN &&
 	    !(c->flags & (CHAN_CLOSE_SENT|CHAN_CLOSE_RCVD)) &&
-	    ((c->local_window_max - c->local_window >
+	    ((packet_is_interactive() && 
+	    c->local_window_max - c->local_window >
 	    c->local_maxpacket*3) ||
 	    c->local_window < c->local_window_max/2) &&
 	    c->local_consumed > 0) {