diff --git a/munin/laserjet_ b/munin/laserjet_
index 5fc04a14..6b6d8fd7 100755
--- a/munin/laserjet_
+++ b/munin/laserjet_
@@ -150,8 +150,9 @@ else:
                 max_val = int(comm.get(max_courbes[fieldname]))
                 value = 100*int(comm.get(dico_courbes[fieldname][0]))/max_val
             else :
-                value = comm.get(dico_courbes[fieldname][0])
+                value = int(comm.get(dico_courbes[fieldname][0]))
         except Exception,err:
             value = 0
+        if value < 0 : value = 0
         
         print "%s.value %s" % (fieldname,value)