diff --git a/account_move_line_rma_order_line/tests/test_account_move_line_rma_order_line.py b/account_move_line_rma_order_line/tests/test_account_move_line_rma_order_line.py
index 106253c6..e84d5415 100644
--- a/account_move_line_rma_order_line/tests/test_account_move_line_rma_order_line.py
+++ b/account_move_line_rma_order_line/tests/test_account_move_line_rma_order_line.py
@@ -180,8 +180,8 @@ class TestAccountMoveLineRmaOrderLine(common.SavepointCase):
             data = wizard._prepare_rma_line_from_stock_move(move)
             wizard.add_lines()
 
-            for operation in move.product_id.rma_customer_operation_id:
-                operation.in_route_id = False
+            if move.product_id.rma_customer_operation_id:
+                move.product_id.rma_customer_operation_id.in_route_id = False
             move.product_id.categ_id.rma_customer_operation_id = False
             move.product_id.rma_customer_operation_id = False
             wizard._prepare_rma_line_from_stock_move(move)