diff --git a/lua/avante/utils.lua b/lua/avante/utils.lua
index 54fb978..9326fd7 100644
--- a/lua/avante/utils.lua
+++ b/lua/avante/utils.lua
@@ -20,7 +20,11 @@ setmetatable(M, {
 ---@param plugin string
 ---@return boolean
 M.has = function(plugin)
-  return require("lazy.core.config").plugins[plugin] ~= nil
+  local ok, LazyConfig = pcall(require, "lazy.core.config")
+  if ok then
+    return LazyConfig.plugins[plugin] ~= nil
+  end
+  return package.loaded[plugin] ~= nil
 end
 
 ---@alias _ToggleSet fun(state: boolean): nil
diff --git a/lua/tiktoken_lib.lua b/lua/tiktoken_lib.lua
index a761651..942cc0a 100644
--- a/lua/tiktoken_lib.lua
+++ b/lua/tiktoken_lib.lua
@@ -1,21 +1,7 @@
-local H = {}
 local M = {}
 
-H.get_os_name = function()
-  local os_name = vim.uv.os_uname().sysname
-  if os_name == "Linux" then
-    return "linux"
-  elseif os_name == "Darwin" then
-    return "macOS"
-  elseif os_name == "Windows_NT" then
-    return "windows"
-  else
-    error("Unsupported operating system: " .. os_name)
-  end
-end
-
-H.library_path = function()
-  local os_name = H.get_os_name()
+local function get_library_path()
+  local os_name = require("avante.utils").get_os_name()
   local ext = os_name == "linux" and "so" or (os_name == "macOS" and "dylib" or "dll")
   local dirname = string.sub(debug.getinfo(1).source, 2, #"/tiktoken_lib.lua" * -1)
   return dirname .. ("../build/?.%s"):format(ext)
@@ -27,7 +13,7 @@ local trim_semicolon = function(s)
 end
 
 M.load = function()
-  local library_path = H.library_path()
+  local library_path = get_library_path()
   if not string.find(package.cpath, library_path, 1, true) then
     package.cpath = trim_semicolon(package.cpath) .. ";" .. library_path
   end