diff --git a/pubs/commands/list_cmd.py b/pubs/commands/list_cmd.py
index de44549..02b962d 100644
--- a/pubs/commands/list_cmd.py
+++ b/pubs/commands/list_cmd.py
@@ -27,7 +27,7 @@ def parser(subparsers, conf):
                         help='list only pubs without attached documents.')
     parser.add_argument('query', nargs='*',
                         help='Paper query ("author:Einstein", "title:learning",'
-                             '"year:2000", "year:2000-2010, or "tags:math")')
+                             '"year:2000", "year:2000-2010", or "tags:math")')
     return parser