diff --git a/addons/mrp/models/mrp_bom.py b/addons/mrp/models/mrp_bom.py
index 941e67c8355..c22da9b5340 100644
--- a/addons/mrp/models/mrp_bom.py
+++ b/addons/mrp/models/mrp_bom.py
@@ -184,10 +184,10 @@ class MrpBom(models.Model):
     def _bom_find(self, product_tmpl=None, product=None, picking_type=None, company_id=False, bom_type=False):
         """ Finds BoM for particular product, picking and company """
         if product and product.type == 'service' or product_tmpl and product_tmpl.type == 'service':
-            return False
+            return self.env['mrp.bom']
         domain = self._bom_find_domain(product_tmpl=product_tmpl, product=product, picking_type=picking_type, company_id=company_id, bom_type=bom_type)
         if domain is False:
-            return domain
+            return self.env['mrp.bom']
         return self.search(domain, order='sequence, product_id', limit=1)
 
     def explode(self, product, quantity, picking_type=False):