diff --git a/.editorconfig b/.editorconfig
index 1f39b72e..f316f5ab 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -13,6 +13,7 @@ trim_trailing_whitespace = true
 indent_style = space
 indent_size = 2
 trim_trailing_whitespace = false
+max_line_length = 80
 
 [*.{js,json,nix,yml,yaml,toml}]
 indent_style = space
diff --git a/docs/manual/release-notes/rl-0.9.md b/docs/manual/release-notes/rl-0.9.md
index 04a6ba17..f512540c 100644
--- a/docs/manual/release-notes/rl-0.9.md
+++ b/docs/manual/release-notes/rl-0.9.md
@@ -150,5 +150,3 @@
 
 - Added [Selenen](https://github.com/kampfkarren/selene) for more diagnostics in
   `languages.lua`.
-
-<!-- vim: set textwidth=80: -->