1 files changed, 1 insertions, 2 deletions

diff --git a/lisp/progmodes/python.el b/lisp/progmodes/python.el
index 5bb15c60956..f9b645cc3df 100644
--- a/lisp/progmodes/python.el
+++ b/lisp/progmodes/python.el
@@ -2720,8 +2720,7 @@ dedicated to the current buffer or its project (if one is found)."
 (defmacro python-shell--add-to-path-with-priority (pathvar paths)
   "Modify PATHVAR and ensure PATHS are added only once at beginning."
   `(dolist (path (reverse ,paths))
-     (cl-delete path ,pathvar :test #'string=)
-     (cl-pushnew path ,pathvar :test #'string=)))
+     (setq ,pathvar (cons path (cl-delete path ,pathvar :test #'string=)))))
 
 (defun python-shell-calculate-pythonpath ()
   "Calculate the PYTHONPATH using `python-shell-extra-pythonpaths'."