diff --git a/Layout/default/Invoice/Index.php b/Layout/default/Invoice/Index.php
index 30ac90346..9e22ad4cb 100644
--- a/Layout/default/Invoice/Index.php
+++ b/Layout/default/Invoice/Index.php
@@ -54,7 +54,11 @@ $pagination_entity_name = "Rechnungen";
                                         <label class="form-label" for="filter_customer_number">Kundennummer</label>
                                         <input type="text" class="form-control" name="filter[customer_number]" id="filter_customer_number" value="<?=(array_key_exists("customer_number", $filter)) ? $filter['customer_number'] : ""?>"/>
                                     </div>
-                                    <div class="col-2">
+                                    <div class="col-1">
+                                        <label class="form-label" for="filter_fibu_account_number">FIBU Konten</label>
+                                        <input type="text" class="form-control" name="filter[fibu_account_number]" id="filter_fibu_account_number" value="<?=(array_key_exists("fibu_account_number", $filter)) ? $filter['fibu_account_number'] : ""?>"/>
+                                    </div>
+                                    <div class="col-1">
                                         <label class="form-label" for="filter_customer">Kunde</label>
                                         <input type="text" class="form-control" name="filter[customer]" id="filter_customer" value="<?=(array_key_exists("customer", $filter)) ? $filter['customer'] : ""?>"/>
                                     </div>
diff --git a/application/Invoice/InvoiceModel.php b/application/Invoice/InvoiceModel.php
index 659842282..5449b1d22 100644
--- a/application/Invoice/InvoiceModel.php
+++ b/application/Invoice/InvoiceModel.php
@@ -577,6 +577,13 @@ class InvoiceModel {
             }
         }
 
+        if(array_key_exists("fibu_account_number", $filter)) {
+            $fibu_account_number = $filter['fibu_account_number'];
+            if($fibu_account_number) {
+                $where .= " AND Invoice.fibu_account_number = '$fibu_account_number'";
+            }
+        }
+
 
         if(array_key_exists("add-where", $filter)) {
             $where .= " ".$filter['add-where'];