diff --git a/munin/wiki_themes b/munin/wiki_themes
index b148c30d..b609e382 100755
--- a/munin/wiki_themes
+++ b/munin/wiki_themes
@@ -20,7 +20,7 @@ if arg == "config" :
     print "graph_vlabel nb d'utilisateurs"
     for theme in THEMES :
         nom = theme.strip().split(' ')[1]
-        for char in [' ','_','-','/','\\',':',';','.'] :
+        for char in [' ','_','-','/','\\',':',';','.','<','>'] :
             nom = nom.replace(char, '')
         print '%s.label %s' % (nom, theme.strip().split(' ')[1])
         if THEMES.index(theme) == 0 :
@@ -32,7 +32,7 @@ else :
     for theme in THEMES :
         nom = theme.strip().split(' ')[1]
         nb = theme.strip().split(' ')[0]
-        for char in [' ','_','-','/','\\',':',';','.'] :
+        for char in [' ','_','-','/','\\',':',';','.','<','>'] :
             nom = nom.replace(char, '')
         print '%s.value %s' % (nom, nb)