diff --git a/stock.py b/stock.py
index 89bbee28e3..9f3ca40826 100644
--- a/stock.py
+++ b/stock.py
@@ -241,7 +241,8 @@ class QuantityEarlyPlan(Workflow, ModelSQL, ModelView):
                 ('company', '=', company.id),
                 ('state', '=', 'open'),
                 ])
-        opens = [p for p in opens if p.warehouse in warehouses]
+        opens = [
+            p for p in opens if p.warehouse in warehouses or not p.warehouse]
         cls.delete(opens)
 
         plans = {}