diff --git a/CHANGELOG_de-DE.md b/CHANGELOG_de-DE.md
index 5fcf8bb..0b526db 100644
--- a/CHANGELOG_de-DE.md
+++ b/CHANGELOG_de-DE.md
@@ -1,3 +1,6 @@
+# 1.2.4
+* Fehler bei Umlaute behoben, beim downloaden der .zip Datei
+
 # 1.2.3
 * added various filetypes to be able to upload also documents
 * it's also possible to upload your very own .zip file
diff --git a/CHANGELOG_en-GB.md b/CHANGELOG_en-GB.md
index 4e1de90..bc2ffa2 100644
--- a/CHANGELOG_en-GB.md
+++ b/CHANGELOG_en-GB.md
@@ -1,3 +1,6 @@
+# 1.2.4
+* fixed umlauts while downloading the .zip within the storefront
+
 # 1.2.3
 * added various filetypes to be able to upload also documents
 * it's also possible to upload your very own .zip file
diff --git a/composer.json b/composer.json
index 83f941a..3d376df 100644
--- a/composer.json
+++ b/composer.json
@@ -3,7 +3,7 @@
     "description":"ESD / Download plugin",
     "type":"shopware-platform-plugin",
     "keywords": ["esd", "download"],
-    "version":"1.2.3",
+    "version":"1.2.4",
     "license":"proprietary",
     "authors":[
         {
diff --git a/src/Service/EsdService.php b/src/Service/EsdService.php
index a5b0308..00905fc 100644
--- a/src/Service/EsdService.php
+++ b/src/Service/EsdService.php
@@ -243,6 +243,13 @@ private function createCriteriaEsdOrder(string $customerId, ?string $productId =
     private function convertFileName($string): string
     {
         $string = str_replace(' ', '-', $string);
+        $string = str_replace('ä', 'ae', $string);
+        $string = str_replace('ü', 'ue', $string);
+        $string = str_replace('ö', 'oe', $string);
+        $string = str_replace('Ä', 'Ae', $string);
+        $string = str_replace('Ö', 'Oe', $string);
+        $string = str_replace('Ü', 'Ue', $string);
+        $string = str_replace('ß', 'ss', $string);
         $string = preg_replace('/[^A-Za-z0-9\-]/', '', $string);
 
         return preg_replace('/-+/', '-', $string);