diff --git a/erpnext/manufacturing/doctype/production_plan/production_plan.py b/erpnext/manufacturing/doctype/production_plan/production_plan.py
index 4dc98e7ade..10d9a474e0 100644
--- a/erpnext/manufacturing/doctype/production_plan/production_plan.py
+++ b/erpnext/manufacturing/doctype/production_plan/production_plan.py
@@ -622,7 +622,7 @@ def get_items_for_material_requests(doc, ignore_existing_ordered_qty=None):
 	for data in po_items:
 		planned_qty = data.get('required_qty') or data.get('planned_qty')
 		ignore_existing_ordered_qty = data.get('ignore_existing_ordered_qty') or ignore_existing_ordered_qty
-		warehouse = data.get("warehouse") or warehouse
+		warehouse = warehouse or data.get("warehouse")
 
 		item_details = {}
 		if data.get("bom") or data.get("bom_no"):