diff --git a/bin/spack b/bin/spack
index 45a31fbeb0..3ad3a07bbc 100755
--- a/bin/spack
+++ b/bin/spack
@@ -35,8 +35,7 @@ parser.add_argument('-m', '--mock', action='store_true', dest='mock',
 
 # each command module implements a parser() function, to which we pass its
 # subparser for setup.
-subparsers = parser.add_subparsers(
-    title="commands", metavar='<command>', dest="command")
+subparsers = parser.add_subparsers(metavar='COMMAND', dest="command")
 
 import spack.cmd
 for cmd in spack.cmd.commands: