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-rw-r--r--wlauto/core/command.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/wlauto/core/command.py b/wlauto/core/command.py
index bad6b615..47f00c2e 100644
--- a/wlauto/core/command.py
+++ b/wlauto/core/command.py
@@ -21,7 +21,7 @@ from wlauto.core.version import get_wa_version
def init_argument_parser(parser):
- parser.add_argument('-c', '--config', help='specify an additional config.py', action='append')
+ parser.add_argument('-c', '--config', help='specify an additional config.py', action='append', default=[])
parser.add_argument('-v', '--verbose', action='count',
help='The scripts will produce verbose output.')
parser.add_argument('--version', action='version', version='%(prog)s {}'.format(get_wa_version()))