diff --git a/addons/mrp_byproduct/test/mrp_byproduct.yml b/addons/mrp_byproduct/test/mrp_byproduct.yml
index 6932a77183c..cd6ce885256 100644
--- a/addons/mrp_byproduct/test/mrp_byproduct.yml
+++ b/addons/mrp_byproduct/test/mrp_byproduct.yml
@@ -65,7 +65,9 @@
 -
   !python {model: mrp.product.produce}: |
     qty = self.browse(cr, uid, ref('mrp_product_produce0')).product_qty
-    lines = self.on_change_qty(cr, uid, [ref('mrp_product_produce0')], qty, [], context=context)
+    ctx = context.copy()
+    ctx['active_id'] = ref("mrp_production_mo0")
+    lines = self.on_change_qty(cr, uid, [ref('mrp_product_produce0')], qty, [], context=ctx)
     self.write(cr, uid, [ref('mrp_product_produce0')], lines['value'], context=context)
     self.do_produce(cr, uid, [ref("mrp_product_produce0")], {"active_model": "mrp.production", "active_ids":[ref("mrp_production_mo0")], "active_id": ref("mrp_production_mo0")})
 -