diff --git a/lua/tabnine/utils.lua b/lua/tabnine/utils.lua
index 929b4e3..ab9e24f 100644
--- a/lua/tabnine/utils.lua
+++ b/lua/tabnine/utils.lua
@@ -1,16 +1,20 @@
 local fn = vim.fn
 local api = vim.api
-
+local unpack = table.unpack or unpack
+local pack = table.pack or vim.F.pack_len
 local M = {}
 local last_changedtick = vim.b.changedtick
 
+---@param func fun(...: unknown): any the callback
+---@param delay integer delay in milliseconds
+---@return fun(...: unknown)
 function M.debounce(func, delay)
 	local timer_id
 	return function(...)
 		if timer_id then fn.timer_stop(timer_id) end
-		local args = { ... }
+		local args = pack(...)
 		timer_id = fn.timer_start(delay, function()
-			func(unpack(args))
+			return func(unpack(args, 1, args.n))
 		end)
 	end
 end