diff --git a/lib/rapi/rlib2.py b/lib/rapi/rlib2.py
index 479786e9809ddd948295c4a6e25ebb9a13c9f429..832fe456feb8864313d5b33183e6af2a63767226 100644
--- a/lib/rapi/rlib2.py
+++ b/lib/rapi/rlib2.py
@@ -203,7 +203,7 @@ class R_2_instances(baserlib.R_Generic):
       A job id.
 
     """
-    opts = self.post_data
+    opts = self.req.request_post_data
 
     # beparams
     mem = opts.get('mem', None)