diff --git a/README.md b/README.md
index e48ead0..e19ab8b 100644
--- a/README.md
+++ b/README.md
@@ -7,5 +7,6 @@ The default rustfmt.toml for my projects.
 group_imports = "StdExternalCrate"
 imports_granularity = "Module"
 wrap_comments = true
+comment_width = 100
 fn_call_width = 100
 ```