diff --git a/src/Service/RequestService.php b/src/Service/RequestService.php
index 2148610a..9a430392 100644
--- a/src/Service/RequestService.php
+++ b/src/Service/RequestService.php
@@ -226,6 +226,16 @@ public function serializeData(array $data, &$contentType, ?string $xmlRootNode =
             $endpoint = $this->data['endpoint'];
         }
 
+        if ($xmlRootNode === null && in_array('http://schemas.xmlsoap.org/soap/envelope/', $data) === true) {
+            $nsRef = array_search(needle: 'http://schemas.xmlsoap.org/soap/envelope/', haystack: $data);
+            [
+                $xmlns,
+                $ns,
+            ]      = explode(separator: ':', string: $nsRef, limit: 2);
+
+            $xmlRootNode = "$ns:Envelope";
+        }
+
         $encoderSettings = ['xml_encoding' => 'utf-8'];
         if ($xmlRootNode) {
             $encoderSettings['xml_root_node_name'] = $xmlRootNode;
@@ -807,6 +817,10 @@ public function proxyHandler(array $data, array $configuration, ?Source $proxy =
                 unset($headers['Content-Length']);
             }
 
+            if ($data['accept'] !== $headers['content-type'][0]) {
+                $headers['content-type'] = $data['accept'];
+            }
+
             // Let create a response from the guzzle call.
             $response = new Response(
                 $this->serializeData($resultContent, $contentType, $xmlRootNode),