diff --git a/lisp/ein-multilang.el b/lisp/ein-multilang.el
index 9580702..5e95f5d 100644
--- a/lisp/ein-multilang.el
+++ b/lisp/ein-multilang.el
@@ -93,10 +93,10 @@ This function may raise an error."
   (make-local-variable 'parse-sexp-ignore-comments)
   (make-local-variable 'indent-line-function)
   (make-local-variable 'indent-region-function)
-  (make-local-variable 'beginning-of-defun-function)
-  (make-local-variable 'end-of-defun-function)
-  (setq beginning-of-defun-function 'ein:worksheet-beginning-of-cell-input)
-  (setq end-of-defun-function 'ein:worksheet-end-of-cell-input)
+  (set (make-local-variable 'beginning-of-defun-function)
+       'ein:worksheet-beginning-of-cell-input)
+  (set (make-local-variable 'end-of-defun-function)
+       'ein:worksheet-end-of-cell-input)
   (ein:ml-lang-setup-python)
   (ein:ml-set-font-lock-defaults))