diff --git a/Tools/px_process_airframes.py b/Tools/px_process_airframes.py
index 6b8e6f25d4..20f41739c6 100755
--- a/Tools/px_process_airframes.py
+++ b/Tools/px_process_airframes.py
@@ -66,7 +66,7 @@ def main():
                         const="airframes.md",
                         metavar="FILENAME",
                         help="Create Markdown file"
-                             " (default FILENAME: airframes.md)")
+                             " (default FILENAME: airframes_reference.md)")
     parser.add_argument("-s", "--start-script",
                         nargs='?',
                         const="rc.autostart",