diff --git a/munin/laserjet_ b/munin/laserjet_
index 6b6d8fd7..3c0e7d2c 100755
--- a/munin/laserjet_
+++ b/munin/laserjet_
@@ -122,7 +122,7 @@ except :
 if arg == "config" :
     print 'host_name laserjet'
     print 'graph_category consommables'
-    print "graph_args --lower-limit %i --upper-limit %i" % (lower_limit,upper_limit)
+    print "graph_args --lower-limit %i --upper-limit %i --rigid" % (lower_limit,upper_limit)
     print 'graph_title %s' % titre
     print "graph_vlabel %s" % vlabel
     keys = dico_courbes.keys()