diff --git a/lua/perga/init.lua b/lua/perga/init.lua
index 161f76d..6b05f17 100644
--- a/lua/perga/init.lua
+++ b/lua/perga/init.lua
@@ -5,16 +5,18 @@ function M.setup(opts)
         extension = { pg = 'perga' }
     })
 
-    local parser_config = require "nvim-treesitter.parsers".get_parser_configs()
+    vim.opt.commentstring = '-- %s'
+
+    local parser_config = require 'nvim-treesitter.parsers'.get_parser_configs()
     parser_config.perga = {
         install_info = {
-            url = "https://forgejo.ballcloud.cc/wball/tree-sitter-perga",
-            files = {"src/parser.c"},
-            branch = "main",
+            url = 'https://forgejo.ballcloud.cc/wball/tree-sitter-perga',
+            files = {'src/parser.c'},
+            branch = 'main',
             generate_requires_npm = false,
             requires_generate_from_grammar = false,
         },
-        filetype = "pg",
+        filetype = 'pg',
     }
 end