diff --git a/neovim/dev.nix b/neovim/dev.nix
index 7d7dcd0..519c38e 100644
--- a/neovim/dev.nix
+++ b/neovim/dev.nix
@@ -4,11 +4,11 @@ let
   inherit (lib.mod) ctrl;
   inherit (lib.nix2lua) pipe1 require call call0;
 
-  mkLineLimiterGroup = { limit, filetypes }:
+  mkLineLimiterGroup = { limit, pattern }:
     lib.nameValuePair
       "line-limiter-${toString limit}"
       {
-        inherit filetypes;
+        inherit pattern;
         opt = {
           colorcolumn = toString limit;
           textwidth = limit;
@@ -26,12 +26,12 @@ in
     formatexpr = "neoformat#Neoformat(0, '', v:lnum, v:lnum + v:count)";
   };
 
-  buffer = {
+  buffer.filetype = {
     nix.opt.formatexpr = "neoformat#Neoformat(0, '', 0, 99999)";
   } // lib.listToAttrs [
     (mkLineLimiterGroup {
       limit = 101;
-      filetypes = [
+      pattern = [
         "nix"
         "javascript,javascriptreact"
         "typescript,typescriptreact"
@@ -41,7 +41,7 @@ in
     })
     (mkLineLimiterGroup {
       limit = 81;
-      filetypes = [
+      pattern = [
         "python"
         "json"
         "yaml"