diff --git a/gestion/chsh.py b/gestion/chsh.py
index aaca8f49..75eda1ea 100644
--- a/gestion/chsh.py
+++ b/gestion/chsh.py
@@ -38,9 +38,11 @@ fd=open('/etc/shells')
 lines=fd.readlines()
 fd.close()
 
-if not shell in map(str.strip,lines) :
+shells = [line for line in lines if not (line.startswith('#') or line.endswith('/rssh'))]
+
+if not shell in shells:
     print 'Shell invalide. Les shells valides sont :'
-    print ''.join(lines[1:])
+    print ''.join(shells)
     sys.exit(4)
 
 adh.chsh(shell)