diff --git a/munin/webalizer_ b/munin/webalizer_
index 950e51e8..a2dca052 100755
--- a/munin/webalizer_
+++ b/munin/webalizer_
@@ -53,9 +53,9 @@ if arg == "config" :
     print 'graph_vlabel % des visites'
     for key in usage.keys() :
         nom = key
-        for char in [' ','_','-','/','\\',':',';','.'] :
+        for char in [' ','_','-','/','\\',':',';','.','+','(',')','!'] :
             nom = nom.replace(char, '')
-        print '%s.label %s' % (nom, key)
+        print '%s.label %s' % (nom, key[:20])
         if usage.keys().index(key) == 0 :
             print '%s.draw AREA' % nom
         else :
@@ -66,7 +66,7 @@ if arg == "config" :
 else :
     for key in usage.keys() :
         nom = key
-        for char in [' ','_','-','/','\\',':',';','.'] :
+        for char in [' ','_','-','/','\\',':',';','.','+','(',')','!'] :
             nom = nom.replace(char, '')
         print '%s.value %.2f' % (nom, usage[key])
     print 'reste.value %.2f' % reste