--- ob.el.orig	2012-05-16 11:15:25.000000000 +0200
+++ ob.el	2012-05-16 11:14:58.000000000 +0200
@@ -1148,6 +1148,7 @@
 	 (lang (org-babel-clean-text-properties (match-string 2)))
          (lang-headers (intern (concat "org-babel-default-header-args:" lang)))
 	 (switches (match-string 3))
+     (params (match-string 4))
          (body (org-babel-clean-text-properties
 		(let* ((body (match-string 5))
 		       (sub-length (- (length body) 1)))
@@ -1169,7 +1170,7 @@
            (org-babel-params-from-properties lang)
 	   (if (boundp lang-headers) (eval lang-headers) nil)
 	   (org-babel-parse-header-arguments
-            (org-babel-clean-text-properties (or (match-string 4) ""))))
+            (org-babel-clean-text-properties (or params ""))))
 	  switches
 	  block-indentation)))