diff --git a/Doc/library/argparse.rst b/Doc/library/argparse.rst
index 995c4ee..1b87919 100644
--- a/Doc/library/argparse.rst
+++ b/Doc/library/argparse.rst
@@ -148,7 +148,7 @@ ArgumentParser objects
    as keyword arguments. Each parameter has its own more detailed description
    below, but in short they are:
 
-   * prog_ - The name of the program (default: ``sys.argv[0]``)
+   * prog_ - The name of the program (default: uses part of ``sys.argv[0]``)
 
    * usage_ - The string describing the program usage (default: generated from
      arguments added to parser)