diff --git a/layers.personal/orgtools/local/ob-metapost/ob-metapost.el b/layers.personal/orgtools/local/ob-metapost/ob-metapost.el
index 0f78bae..5190341 100644
--- a/layers.personal/orgtools/local/ob-metapost/ob-metapost.el
+++ b/layers.personal/orgtools/local/ob-metapost/ob-metapost.el
@@ -144,7 +144,7 @@ Metapost does not support sessions"
 (defun org-babel-variable-assignments:metapost (params)
   "Return list of metapost statements assigning the block's variables"
   (mapcar #'org-babel-metapost-var-to-metapost
-	  (mapcar #'cdr (org-babel-get-header params :var))))
+          (org-babel-get-vars params)))
 
 (defconst metapost-type-prefix "^[^:]*:")