diff --git a/lua/config/set.lua b/lua/config/set.lua
index 2293a7d..8f4433b 100644
--- a/lua/config/set.lua
+++ b/lua/config/set.lua
@@ -26,7 +26,8 @@ vim.opt.wrap = false
 
 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