diff --git a/beetsplug/audible.py b/beetsplug/audible.py
index d01b260..4598fa1 100644
--- a/beetsplug/audible.py
+++ b/beetsplug/audible.py
@@ -184,7 +184,6 @@ def __init__(self):
                 "keep_series_reference_in_title": True,
                 "keep_series_reference_in_subtitle": True,
                 "goodreads_apikey": None,
-                "trust_source_numbering": True,
             }
         )
         self.config["goodreads_apikey"].redact = True