diff --git a/main.py b/main.py
index b16156c..7b600c6 100644
--- a/main.py
+++ b/main.py
@@ -17,6 +17,7 @@
                 )
 parser.add_argument("-I", "--identify", nargs=1, type=int, metavar="",
                     required=False,
+                    default=[0],
                     help="Search specific event with unique ID"
                 )
 parser.add_argument("-T", "--type", nargs="+", type=str, metavar="",