diff --git a/font_collector/parse_arguments.py b/font_collector/parse_arguments.py
index 5dd4202..6267dd1 100644
--- a/font_collector/parse_arguments.py
+++ b/font_collector/parse_arguments.py
@@ -47,7 +47,7 @@ def parse_arguments() -> Tuple[
     parser.add_argument(
         "--input",
         "-i",
-        nargs="*",
+        nargs="+",
         type=Path,
         required=True,
         help="""