diff --git a/Layout/default/Invoice/Index.php b/Layout/default/Invoice/Index.php
index af3c9ba0b..03876d014 100644
--- a/Layout/default/Invoice/Index.php
+++ b/Layout/default/Invoice/Index.php
@@ -35,6 +35,11 @@ $pagination_entity_name = "Rechnungen";
                             <form method="get" action="<?=self::getUrl("Invoice")?>">
                                 <div class="row">
 
+                                    <div class="col-2">
+                                        <label class="form-label" for="filter_invoice_number">Rechnungsnummer</label>
+                                        <input type="text" class="form-control" name="filter[invoice_number]" id="filter_invoice_number" value="<?=(array_key_exists("invoice_number", $filter)) ? $filter['invoice_number'] : ""?>"/>
+                                    </div>
+
                                     <div class="col-2">
                                         <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'] : ""?>"/>
diff --git a/application/Invoice/InvoiceController.php b/application/Invoice/InvoiceController.php
index 45acad4e3..8712c53a7 100644
--- a/application/Invoice/InvoiceController.php
+++ b/application/Invoice/InvoiceController.php
@@ -59,7 +59,7 @@ class InvoiceController extends mfBaseController {
 
         if (array_key_exists("customer", $filter)) {
             if (array_key_exists("customer", $filter) && $filter["customer"]) {
-                $kunde = $this->db()->escape($filter['customer']);
+                $kunde = $this->db()->escape(trim($filter['customer']));
                 if (!array_key_exists("add-where", $new_filter)) $new_filter["add-where"] = "";
                 $new_filter['add-where'] .= " AND (company like '%$kunde%' OR firstname like '%$kunde%' OR lastname like '%$kunde%' OR concat(firstname, ' ', lastname) like '%$kunde%' OR concat(lastname, ' ', firstname) like '%$kunde%')";
             }
@@ -67,12 +67,17 @@ class InvoiceController extends mfBaseController {
 
         if(array_key_exists("address", $filter)) {
             if($filter["address"]) {
-                $search = $this->db()->escape($filter['address']);
+                $search = $this->db()->escape(trim($filter['address']));
                 if (!array_key_exists("add-where", $new_filter)) $new_filter["add-where"] = "";
                 $new_filter['add-where'] .= " AND (street like '%$search%' OR zip like '%$search%' OR city like '%$search%' OR country like '%$search%')";
             }
         }
 
+        if(array_key_exists("invoice_number", $filter) && $filter["invoice_number"]) {
+            $new_filter["invoice_number%"] = trim($filter["invoice_number"]);
+            unset($filter["invoice_number"]);
+        }
+
         if (is_array($filter) && count($filter)) {
             foreach ($filter as $name => $value) {
                 $new_filter[$name] = $value;
diff --git a/application/Invoice/InvoiceModel.php b/application/Invoice/InvoiceModel.php
index 1ca115c31..2afe875c1 100644
--- a/application/Invoice/InvoiceModel.php
+++ b/application/Invoice/InvoiceModel.php
@@ -245,7 +245,14 @@ class InvoiceModel {
                 $where .= " AND Invoice.invoice_number IS NULL";
             }
         }
-        
+
+        if(array_key_exists("invoice_number%", $filter)) {
+            $invoice_number = $filter['invoice_number%'];
+            if($invoice_number) {
+                $where .= " AND Invoice.invoice_number LIKE '%$invoice_number%'";
+            }
+        }
+
         if(array_key_exists("invoice_date", $filter)) {
             $invoice_date = $filter['invoice_date'];
             if($invoice_date) {