diff --git a/user/kak/filetypes.kak b/user/kak/filetypes.kak
index 0a2e478..765c14f 100644
--- a/user/kak/filetypes.kak
+++ b/user/kak/filetypes.kak
@@ -11,6 +11,10 @@ hook global WinSetOption filetype=c %{
     set buffer formatcmd 'clang-format'
 }
 
+hook global WinSetOption filetype=nix %{
+    set buffer formatcmd 'nixpkgs-fmt'
+}
+
 hook global BufCreate .*\.rs %{
     set buffer formatcmd 'rustfmt'
 }
diff --git a/user/kak/usermode.kak b/user/kak/usermode.kak
index 1e42712..cf3ae16 100644
--- a/user/kak/usermode.kak
+++ b/user/kak/usermode.kak
@@ -10,7 +10,7 @@ map global user 'z' ':zoxide ' -docstring 'zoxide'
 map global user 'n' ': new<ret>' -docstring 'new window'
 
 map global user 'e' 'x|emmet<ret>@' -docstring 'process line with emmet'
-map global user 'm' ': try lsp-formatting-sync catch format-buffer<ret>' -docstring 'format document'
+map global user 'm' ': try format-buffer catch lsp-formatting-sync<ret>' -docstring 'format document'
 map global user 'M' ': try lsp-range-formatting-sync catch format-selections<ret>' -docstring 'format selection'
 
 map global user 'c' ': comment-line<ret>' -docstring 'comment line'