diff --git a/modules/lsp/config.nix b/modules/lsp/config.nix
index 83da30b26..2dc98487e 100644
--- a/modules/lsp/config.nix
+++ b/modules/lsp/config.nix
@@ -48,6 +48,10 @@ in {
               ${
         if config.vim.lsp.null-ls.enable
         then ''
+          if vim.b.formatsave == false then
+            return
+          end
+
           local function is_null_ls_formatting_enabled(bufnr)
               local file_type = vim.api.nvim_buf_get_option(bufnr, "filetype")
               local generators = require("null-ls.generators").get_available(
diff --git a/modules/lsp/module.nix b/modules/lsp/module.nix
index 88a281139..3ec7b5aa3 100644
--- a/modules/lsp/module.nix
+++ b/modules/lsp/module.nix
@@ -8,6 +8,6 @@ with lib;
 with builtins; {
   options.vim.lsp = {
     enable = mkEnableOption "LSP, also enabled automatically through null-ls and lspconfig options";
-    formatOnSave = mkEnableOption "format on save";
+    formatOnSave = mkEnableOption "format on save, can be disabled per buffer by setting `let b:formatsave = v:false`";
   };
 }