diff --git a/lua/config/set.lua b/lua/config/set.lua
index a8e2057..edc6340 100644
--- a/lua/config/set.lua
+++ b/lua/config/set.lua
@@ -12,7 +12,8 @@ vim.opt.smartindent = true
 
 vim.opt.swapfile = false
 vim.opt.backup = false
-vim.opt.undodir = os.getenv("HOME") .. "/.vim/undodir"
+local home = os.getenv("HOME") or os.getenv("USERPROFILE")
+vim.opt.undodir = home .. "/.vim/undodir"
 vim.opt.undofile = true
 
 vim.opt.hlsearch = false