diff --git a/src/XML/registry.php b/src/XML/registry.php
new file mode 100644
index 0000000..77c7613
--- /dev/null
+++ b/src/XML/registry.php
@@ -0,0 +1,5 @@
+<?php
+
+return [
+    'http://schemas.xmlsoap.org/soap/envelope/:Body' => '\SimpleSAML\SOAP11\XML\env\Body',
+];