diff --git a/src/textual/widgets/_option_list.py b/src/textual/widgets/_option_list.py
index dfe530543..3b365fa7b 100644
--- a/src/textual/widgets/_option_list.py
+++ b/src/textual/widgets/_option_list.py
@@ -753,7 +753,7 @@ class OptionList(ScrollView, can_focus=True):
         """Get the option with the given ID.
 
         Args:
-            index: The ID of the option to get.
+            option_id: The ID of the option to get.
 
         Returns:
             The option at with the ID.