diff --git a/rma_purchase/models/rma_order_line.py b/rma_purchase/models/rma_order_line.py
index 5403d012..f9aeba0e 100644
--- a/rma_purchase/models/rma_order_line.py
+++ b/rma_purchase/models/rma_order_line.py
@@ -117,6 +117,17 @@ class RmaOrderLine(models.Model):
         self.update(data)
         self._remove_other_data_origin('purchase_order_line_id')
 
+    @api.multi
+    @api.constrains('purchase_order_line_id', 'partner_id')
+    def _check_purchase_partner(self):
+        for rec in self:
+            if (rec.purchase_order_line_id and
+                    rec.purchase_order_line_id.order_id.partner_id !=
+                    rec.partner_id):
+                raise ValidationError(_(
+                    "RMA customer and originating purchase line customer "
+                    "doesn't match."))
+
     @api.multi
     def _remove_other_data_origin(self, exception):
         res = super(RmaOrderLine, self)._remove_other_data_origin(exception)