diff --git a/tests/Integ/BatchingContext.php b/tests/Integ/BatchingContext.php
index 880999b9ca..afcc2cd43e 100644
--- a/tests/Integ/BatchingContext.php
+++ b/tests/Integ/BatchingContext.php
@@ -200,7 +200,7 @@ public function iDeleteABatchOfMessages($messageCount)
         while (count($messages) < $messageCount) {
             $result = $this->client->receiveMessage([
                 'QueueUrl' => $queueUrl,
-                'MaxNumberOfMessages' => $messageCount,
+                'MaxNumberOfMessages' => (int) $messageCount,
             ]);
 
             foreach ($result['Messages'] as $message) {