diff --git a/nvim/init.lua b/nvim/init.lua
index f0d96e2..e7b4996 100644
--- a/nvim/init.lua
+++ b/nvim/init.lua
@@ -31,7 +31,7 @@ vim.opt.list = false
 vim.opt.hlsearch = true
 -- vim.opt.listchars=tab:→\ ,space:·
 vim.opt.undofile = true
-vim.opt.undodir = "~/.local/share/nvim/undo"
+vim.opt.undodir = "$HOME/.local/share/nvim/undo"
 vim.opt.foldlevel = 99
 
 vim.opt.ignorecase = true
@@ -40,12 +40,12 @@ vim.opt.smartcase = true
 vim.keymap.set("n", "<F1>", ":echo<CR>")
 vim.keymap.set("i", "<F1>", "<C-o>:echo<CR>")
 
-local function save()
+function save()
 	vim.cmd(":keeppatterns :%s/\\s\\+$//e")
 	vim.cmd(":up")
 end
 
-local function toggle_buffer()
+function toggle_buffer()
 	local buf = vim.api.nvim_win_get_buf(0)
 	if vim.bo[buf].readonly then
 		vim.cmd(":b#")
@@ -131,7 +131,7 @@ vim.g.UltiSnipsExpandTrigger = "<enter>"
 vim.g.UltiSnipsJumpForwardTrigger = "<c-b>"
 vim.g.UltiSnipsJumpBackwardTrigger = "<c-z>"
 vim.cmd([[
-let g:UltiSnipsSnippetDirectory=['~/.config/nvim/ultisnips']
+let g:UltiSnipsSnippetDirectory=['$HOME/.config/nvim/ultisnips']
 ]])
 
 -- marks