diff --git a/lisp/ob-js.el b/lisp/ob-js.el
index 47355b38b..e12678734 100644
--- a/lisp/ob-js.el
+++ b/lisp/ob-js.el
@@ -114,7 +114,7 @@ Convert an elisp value into a string of js source code
 specifying a variable of the same value."
   (if (listp var)
       (concat "[" (mapconcat #'org-babel-js-var-to-js var ", ") "]")
-    (format "%S" var)))
+    (replace-regexp-in-string "\n" "\\\\n" (format "%S" var))))
 
 (defun org-babel-prep-session:js (session params)
   "Prepare SESSION according to the header arguments specified in PARAMS."