diff --git a/rich/progress.py b/rich/progress.py
index ef6ad60f08..421e14119d 100644
--- a/rich/progress.py
+++ b/rich/progress.py
@@ -1064,7 +1064,7 @@ class Progress(JupyterMixin):
     Args:
         console (Console, optional): Optional Console instance. Defaults to an internal Console instance writing to stdout.
         auto_refresh (bool, optional): Enable auto refresh. If disabled, you will need to call `refresh()`.
-        refresh_per_second (Optional[float], optional): Number of times per second to refresh the progress information or None to use default (10). Defaults to None.
+        refresh_per_second (float, optional): Number of times per second to refresh the progress information. Defaults to 10.
         speed_estimate_period: (float, optional): Period (in seconds) used to calculate the speed estimate. Defaults to 30.
         transient: (bool, optional): Clear the progress on exit. Defaults to False.
         redirect_stdout: (bool, optional): Enable redirection of stdout, so ``print`` may be used. Defaults to True.