diff --git a/launch.py b/launch.py
index a46d174df1d08ef216e84f26663b8fa6a1006e12..50ff40e6c590073a53a3a455a7bb9dcc544763ff 100755
--- a/launch.py
+++ b/launch.py
@@ -428,6 +428,7 @@ class Scheduler:
         self.fname_cluster_state = 'launch_scheduler_state.txt'
         self.reload_pbsflist = 0
         self.cache = cache
+        self.sort = sort
 
         self.pbsnodes = '/opt/pbs/bin/pbsnodes'
         if HOSTNAME[:1] == 'g':