diff --git a/docs/syntax.md b/docs/syntax.md
index 1c14d3e..36ce1a1 100644
--- a/docs/syntax.md
+++ b/docs/syntax.md
@@ -146,7 +146,6 @@ tweak:  # optional tweaking of .gv output
   bgcolor_title: <color>    # Background color of title in diagram cable box
   show_name: <bool>         # defaults to true
   show_wirecount: <bool>    # defaults to true
-  show_wirenumbers: <bool>  # defaults to true for cables; false for bundles
 
 ```