diff --git a/src/python/jw/pkg/App.py b/src/python/jw/pkg/App.py
index 2080d1d8..9cb3143d 100644
--- a/src/python/jw/pkg/App.py
+++ b/src/python/jw/pkg/App.py
@@ -437,7 +437,8 @@ class App(object):
         parser.add_argument('-d', '--debug', action='store_true',
             default=False, help='Output debug information to stderr')
         parser.add_argument('-t', '--topdir', nargs=1, default = [], help='Project Path')
-        parser.add_argument('-p', '--prefix', nargs=1, default = [ self.projs_root ], help='App Path Prefix')
+        parser.add_argument('-p', '--prefix', nargs=1, default = [ self.projs_root ],
+            help='Parent directory of project source directories')
         parser.add_argument('-O', '--os', nargs=1, default = [], help='Target operating system')
         parser.add_argument('cmd', default='', help=f'Command, run "{sys.argv[0]} commands" for a list of supported commands')
         parser.add_argument('arg', nargs='*', help='Command arguments')