diff --git a/src/python/jw/pkg/build/cmds/CmdGetval.py b/src/python/jw/pkg/build/cmds/CmdGetval.py
index 4c01fb45..1e6956bd 100644
--- a/src/python/jw/pkg/build/cmds/CmdGetval.py
+++ b/src/python/jw/pkg/build/cmds/CmdGetval.py
@@ -11,9 +11,12 @@ class CmdGetval(Cmd): # export
 
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
-        parser.add_argument('--project', default = self.app.top_name, help = 'Project name')
+        parser.add_argument('--project', default = None, help = 'Project name, default is name of project\'s topdir')
         parser.add_argument('section', default = '', help = 'Config section')
         parser.add_argument('key', default = '', help = 'Config key')
 
     def _run(self, args: Namespace) -> None:
+        project = args.project
+        if project is None:
+            args.project = self.app.top_name
         print(self.app.get_value(args.project, args.section, args.key))