diff --git a/lua/telescope/builtin/__internal.lua b/lua/telescope/builtin/__internal.lua
index 3960c7bc80..c25ebc734a 100644
--- a/lua/telescope/builtin/__internal.lua
+++ b/lua/telescope/builtin/__internal.lua
@@ -532,12 +532,19 @@ internal.oldfiles = function(opts)
   local current_file = vim.api.nvim_buf_get_name(current_buffer)
   local results = {}
 
+  if utils.iswin then -- for slash problem in windows
+    current_file = current_file:gsub("/", "\\")
+  end
+
   if opts.include_current_session then
     for _, buffer in ipairs(utils.split_lines(vim.fn.execute ":buffers! t")) do
       local match = tonumber(string.match(buffer, "%s*(%d+)"))
       local open_by_lsp = string.match(buffer, "line 0$")
       if match and not open_by_lsp then
         local file = vim.api.nvim_buf_get_name(match)
+        if utils.iswin then
+          file = file:gsub("/", "\\")
+        end
         if vim.loop.fs_stat(file) and match ~= current_buffer then
           table.insert(results, file)
         end
@@ -546,6 +553,9 @@ internal.oldfiles = function(opts)
   end
 
   for _, file in ipairs(vim.v.oldfiles) do
+    if utils.iswin then
+      file = file:gsub("/", "\\")
+    end
     local file_stat = vim.loop.fs_stat(file)
     if file_stat and file_stat.type == "file" and not vim.tbl_contains(results, file) and file ~= current_file then
       table.insert(results, file)