diff --git a/lib/cmdlib.py b/lib/cmdlib.py
index a06decbc59ab0ac27b6e74a429caa956c4028ac4..13480c6af903a2619ebbb3497c28dde321364e74 100644
--- a/lib/cmdlib.py
+++ b/lib/cmdlib.py
@@ -2526,7 +2526,8 @@ def _AssembleInstanceDisks(lu, instance, ignore_secondaries=False):
                            " (is_primary=True, pass=2): %s",
                            inst_disk.iv_name, node, msg)
         disks_ok = False
-    device_info.append((instance.primary_node, inst_disk.iv_name, result.data))
+    device_info.append((instance.primary_node, inst_disk.iv_name,
+                        result.payload))
 
   # leave the disks configured for the primary node
   # this is a workaround that would be fixed better by