diff --git a/lib/GetStream/Stream/Collections.php b/lib/GetStream/Stream/Collections.php
index 6e17ad9..20bb132 100644
--- a/lib/GetStream/Stream/Collections.php
+++ b/lib/GetStream/Stream/Collections.php
@@ -77,8 +77,6 @@ public function upsert($collectionName, array $data)
     {
         $options = ['json' => ['data' => [$collectionName => $data]]];
 
-        var_dump($options); exit;
-
         try {
             $response = $this->client->request('POST', 'meta/', $options);
         } catch (ClientException $e) {
@@ -98,10 +96,11 @@ public function upsert($collectionName, array $data)
      */
     public function delete($collectionName, array $ids)
     {
-        $options = ['json' => ['collection_name' => $collectionName, 'ids' => $ids]];
+        $ids = join(',', $ids);
+        $queryParams = ['collection_name' => $collectionName, 'ids' => $ids];
 
         try {
-            $response = $this->client->request('DELETE', 'meta/', $options);
+            $response = $this->client->request('DELETE', 'meta/?'.http_build_query($queryParams));
         } catch (ClientException $e) {
             throw new StreamFeedException($e->getResponse()->getBody());
         }