--- a/mx/commands.py	Thu Apr 25 11:02:50 2013 +0200
+++ b/mx/commands.py	Thu Apr 25 19:44:58 2013 +0200
@@ -1361,7 +1361,7 @@
             mx.add_argument('--' + c, action='store_const', dest='vmbuild', const=c, help='select the ' + c + ' build of the VM')
         mx.add_argument('--ecl', action='store_true', dest='make_eclipse_launch', help='create launch configuration for running VM execution(s) in Eclipse')
         mx.add_argument('--native-dbg', action='store', dest='native_dbg', help='Start the vm inside a debugger', metavar='<debugger>')
-        mx.add_argument('--gdb', action='store_const', const='/usr/bin/gdb --args', dest='native_dbg', help='alias for --native-dbg /usr/bin/gdb -- args')
+        mx.add_argument('--gdb', action='store_const', const='/usr/bin/gdb --args', dest='native_dbg', help='alias for --native-dbg /usr/bin/gdb --args')
 
         commands.update({
             'export': [export, '[-options] [zipfile]'],