diff --git a/frontends/src/jp/cmd_shell.py b/frontends/src/jp/cmd_shell.py
index 42575cc8..e56d4afe 100644
--- a/frontends/src/jp/cmd_shell.py
+++ b/frontends/src/jp/cmd_shell.py
@@ -141,7 +141,8 @@ class Shell(base.CommandBase, cmd.Cmd):
 
     def do_help(self, args):
         """show help message"""
-        self.disp(A.color(C.A_HEADER, _(u'Shell commands:')), no_lf=True)
+        if not args:
+            self.disp(A.color(C.A_HEADER, _(u'Shell commands:')), no_lf=True)
         super(Shell, self).do_help(args)
         if not args:
             self.disp(A.color(C.A_HEADER, _(u'Action commands:')))