1 files changed, 1 insertions, 1 deletions

diff --git a/lisp/progmodes/python.el b/lisp/progmodes/python.el
index 1a84d461dba..ca18f772970 100644
--- a/lisp/progmodes/python.el
+++ b/lisp/progmodes/python.el
@@ -1351,7 +1351,7 @@ buffer for a list of commands.)"
                (path (getenv "PYTHONPATH"))
                (process-environment     ; to import emacs.py
                 (cons (concat "PYTHONPATH=" data-directory
-                              (if path (concat ":" path)))
+                              (if path (concat path-separator path)))
                       process-environment)))
           (apply 'make-comint-in-buffer "Python"
                  (if new (generate-new-buffer "*Python*") "*Python*")