diff --git a/vlab.py b/vlab.py
index f099491..c9c19b4 100755
--- a/vlab.py
+++ b/vlab.py
@@ -173,7 +173,8 @@ def err(s):
 else:
 	relay_command = "{}:{}".format(parsed.board[0], ephemeral_port)
 
-ssh_cmd = "ssh -L {}:localhost:9001 -L {}:localhost:{} -o PasswordAuthentication=no -e none -i {} {} -p {} -tt {} {}"\
+ssh_cmd = "ssh -L {}:localhost:9001 -L {}:localhost:{} -o PasswordAuthentication=no -o ExitOnForwardFailure=yes " \
+          "-e none -i {} {} -p {} -tt {} {}"\
 	.format(
 	        parsed.webport[0],
 	        parsed.localport[0],