diff --git a/pubs/commands/list_cmd.py b/pubs/commands/list_cmd.py
index a382672..9e7063b 100644
--- a/pubs/commands/list_cmd.py
+++ b/pubs/commands/list_cmd.py
@@ -27,7 +27,7 @@ def parser(subparsers):
             help='list only pubs without attached documents.')
 
     parser.add_argument('query', nargs='*',
-            help='Paper query (e.g. "year: 2000" or "tags: math")')
+            help='Paper query ("author:Einstein", "title:learning", "year:2000" or "tags:math")')
     return parser