diff --git a/site-lisp/org/ob-shell.el b/site-lisp/org/ob-shell.el
index 9c22af8..6f5f76e 100644
--- a/site-lisp/org/ob-shell.el
+++ b/site-lisp/org/ob-shell.el
@@ -140,7 +140,7 @@ This function is called by `org-babel-execute-src-block'."
 
 (defun org-babel--variable-assignments:bash (varname values &optional sep hline)
   "Represents the parameters as useful Bash shell variables."
-  (if (listp values)
+  (if (and (listp values) (null sep))
       (if (and (listp (car values)) (= 1 (length (car values))))
 	  (org-babel--variable-assignments:bash_array varname values sep hline)
 	(org-babel--variable-assignments:bash_assoc varname values sep hline))