diff --git a/OpenSim/Region/Environment/Scenes/SceneObjectGroup.Inventory.cs b/OpenSim/Region/Environment/Scenes/SceneObjectGroup.Inventory.cs
index 5ce898587c..1b2ee7d88b 100644
--- a/OpenSim/Region/Environment/Scenes/SceneObjectGroup.Inventory.cs
+++ b/OpenSim/Region/Environment/Scenes/SceneObjectGroup.Inventory.cs
@@ -248,21 +248,25 @@ namespace OpenSim.Region.Environment.Scenes
                               PermissionMask.Move |
                               PermissionMask.Transfer) | 7;
 
+            uint ownerMask = 0x7ffffff;
             foreach (SceneObjectPart part in m_parts.Values)
+            {
+                ownerMask &= part.OwnerMask;
                 perms &= part.MaskEffectivePermissions();
+            }
 
-            if ((RootPart.OwnerMask & (uint)PermissionMask.Modify) == 0)
+            if (ownerMask & (uint)PermissionMask.Modify) == 0)
                 perms &= ~(uint)PermissionMask.Modify;
-            if ((RootPart.OwnerMask & (uint)PermissionMask.Copy) == 0)
+            if (ownerMask & (uint)PermissionMask.Copy) == 0)
                 perms &= ~(uint)PermissionMask.Copy;
-            if ((RootPart.OwnerMask & (uint)PermissionMask.Transfer) == 0)
+            if (ownerMask & (uint)PermissionMask.Transfer) == 0)
                 perms &= ~(uint)PermissionMask.Transfer;
 
-            if ((RootPart.OwnerMask & RootPart.NextOwnerMask & (uint)PermissionMask.Modify) == 0)
+            if (ownerMask & RootPart.NextOwnerMask & (uint)PermissionMask.Modify) == 0)
                 perms &= ~((uint)PermissionMask.Modify >> 13);
-            if ((RootPart.OwnerMask & RootPart.NextOwnerMask & (uint)PermissionMask.Copy) == 0)
+            if (ownerMask & RootPart.NextOwnerMask & (uint)PermissionMask.Copy) == 0)
                 perms &= ~((uint)PermissionMask.Copy >> 13);
-            if ((RootPart.OwnerMask & RootPart.NextOwnerMask & (uint)PermissionMask.Transfer) == 0)
+            if (ownerMask & RootPart.NextOwnerMask & (uint)PermissionMask.Transfer) == 0)
                 perms &= ~((uint)PermissionMask.Transfer >> 13);
 
             return perms;