diff --git a/python/lsst/ts/IntegrationTests/csc_state_transition.py b/python/lsst/ts/IntegrationTests/csc_state_transition.py
index 3fb927ab..04eb957e 100644
--- a/python/lsst/ts/IntegrationTests/csc_state_transition.py
+++ b/python/lsst/ts/IntegrationTests/csc_state_transition.py
@@ -93,23 +93,26 @@ def csc_state_transition() -> None:
     parser = argparse.ArgumentParser()
     parser.add_argument(
         "csc",
-        metavar="csc",
-        nargs="?",
+        metavar="CSC[:index]",
+        nargs="1",
+        required=True,
         type=str,
-        help="Specify which CSC to command (case sensitive).",
+        help="Specify which CSC[:index] to command (case sensitive).",
     )
     parser.add_argument(
         "state",
         metavar="state",
-        nargs="?",
+        nargs="1",
+        required=True,
         type=str,
         choices=state_list,
         help="Specify to which state to transition.",
     )
     parser.add_argument(
         "sq_index",
-        metavar="sq_index",
-        nargs="?",
+        metavar="scriptqueue_index",
+        nargs="1",
+        required=True,
         type=int,
         choices=[1, 2, 3],
         help="Specify which ScriptQueue to use.",