diff --git a/mailcow/src/mailcow-dockerized/data/web/inc/lib/array_merge_real.php b/mailcow/src/mailcow-dockerized/data/web/inc/lib/array_merge_real.php
new file mode 100644
index 0000000..e2a1fbc
--- /dev/null
+++ b/mailcow/src/mailcow-dockerized/data/web/inc/lib/array_merge_real.php
@@ -0,0 +1,14 @@
+<?php
+
+function array_merge_real()
+{
+    $output = [];
+    foreach (func_get_args() as $array) {
+        foreach ($array as $key => $value) {
+            $output[$key] = isset($output[$key]) ?
+        array_merge($output[$key], $value) : $value;
+        }
+    }
+
+    return $output;
+}