diff --git a/application/Address/Address.php b/application/Address/Address.php
index e77129074..69c141bbb 100644
--- a/application/Address/Address.php
+++ b/application/Address/Address.php
@@ -73,6 +73,7 @@ class Address extends mfBaseModel {
       if(!$fibumerge) {
         // create fibu merge
         $fibumerge = XinonFibuMergeModel::create([
+          "source" => "t",
           "old_custnum" => $this->customer_number,
           "new_custnum" => $this->fibu_account_number,
           "name" => ($this->company) ? $this->company : $this->lastname,
diff --git a/application/XinonFibuMerge/XinonFibuMergeModel.php b/application/XinonFibuMerge/XinonFibuMergeModel.php
index 2e46a3983..ecfcfb8f6 100644
--- a/application/XinonFibuMerge/XinonFibuMergeModel.php
+++ b/application/XinonFibuMerge/XinonFibuMergeModel.php
@@ -1,7 +1,7 @@
 <?php
 
 class XinonFibuMergeModel {
-
+  public $source;
   public $old_custnum;
   public $new_custnum;
   public $name;