diff --git a/src/Endpoints/Delegates/HandlesMultiSearch.php b/src/Endpoints/Delegates/HandlesMultiSearch.php
index 4cd84f9b..c6e76123 100644
--- a/src/Endpoints/Delegates/HandlesMultiSearch.php
+++ b/src/Endpoints/Delegates/HandlesMultiSearch.php
@@ -25,7 +25,7 @@ public function multiSearch(array $queries = [], ?MultiSearchFederation $federat
 
         $payload = ['queries' => $body];
         if (null !== $federation) {
-            $payload['federation'] = $federation->toArray();
+            $payload['federation'] = (object) $federation->toArray();
         }
 
         return $this->http->post('/multi-search', $payload);
diff --git a/tests/Endpoints/HandlesMultiSearchTest.php b/tests/Endpoints/HandlesMultiSearchTest.php
new file mode 100644
index 00000000..e0a1344a
--- /dev/null
+++ b/tests/Endpoints/HandlesMultiSearchTest.php
@@ -0,0 +1,35 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Endpoints;
+
+use Meilisearch\Contracts\MultiSearchFederation;
+use Meilisearch\Contracts\SearchQuery;
+use Meilisearch\Endpoints\Indexes;
+use Tests\TestCase;
+
+final class HandlesMultiSearchTest extends TestCase
+{
+    private Indexes $firstIndex;
+    private Indexes $secondIndex;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+        $this->firstIndex = $this->createEmptyIndex($this->safeIndexName());
+        $this->secondIndex = $this->createEmptyIndex($this->safeIndexName());
+    }
+
+    public function testPassingEmptyMultiSearchFederationDoesNotCauseException(): void
+    {
+        $this->expectNotToPerformAssertions();
+
+        $this->client->multiSearch([
+            (new SearchQuery())->setIndexUid($this->firstIndex->getUid()),
+            (new SearchQuery())->setIndexUid($this->secondIndex->getUid()),
+        ],
+            new MultiSearchFederation()
+        );
+    }
+}