diff --git a/test/lisp/files-tests.el b/test/lisp/files-tests.el
index 90e5ebf215..61e22a47af 100644
--- a/test/lisp/files-tests.el
+++ b/test/lisp/files-tests.el
@@ -353,7 +353,8 @@ files-tests--with-temp-file
   (declare (indent 1) (debug ((symbolp symbolp &optional form) body)))
   (cl-check-type name symbol)
   (cl-check-type non-special-name symbol)
-  `(let* ((,name (make-temp-file "files-tests" ,dir-flag))
+  `(let* ((temporary-file-directory (file-truename temporary-file-directory))
+          (,name (make-temp-file "files-tests" ,dir-flag))
           (,non-special-name (file-name-quote ,name)))
      (unwind-protect
          (progn ,@body)