1 files changed, 1 insertions, 1 deletions
diff --git a/lib/tmpdir.rb b/lib/tmpdir.rb
index 03c02fd788..18d4fb683d 100644
--- a/lib/tmpdir.rb
+++ b/lib/tmpdir.rb
@@ -138,7 +138,7 @@ class Dir
       end
       n = nil
       begin
-        path = File.expand_path(make_tmpname(basename, n), tmpdir)
+        path = File.join(tmpdir, make_tmpname(basename, n))
         yield(path, n, *opts)
       rescue Errno::EEXIST
         n ||= 0