diff --git a/slapos/entry.py b/slapos/entry.py
index e4b75b0d3fb4bf27a7c0ab9371402b6018da9613..5aef1fbb82203dedf0fa1881ec911b30104c62d0 100644
--- a/slapos/entry.py
+++ b/slapos/entry.py
@@ -118,7 +118,7 @@ def dispatch(command, is_node_command):
     elif command == 'bang':
       call(bang, config=True)
     elif command == 'format':
-      call(format, config=GLOBAL_SLAPOS_CONFIGURATION)
+      call(format, config=GLOBAL_SLAPOS_CONFIGURATION, option=['-c'])
     elif command in ['start', 'stop', 'status', 'tail']:
       supervisord()
       supervisorctl()