diff --git a/purchase_request.py b/purchase_request.py
index 0854494078..6f5cab1259 100644
--- a/purchase_request.py
+++ b/purchase_request.py
@@ -189,7 +189,7 @@ class PurchaseRequest(OSV):
         req_ids = request_obj.search(
             cursor, user,
             [('purchase_line', '=', False),
-             ['OR', ('origin', '=', False),
+             ['OR', ('origin', '=', False), ('origin', '=', ''),
               ('origin', 'like', 'stock.order_point,%')
               ]
              ], context=context)