diff --git a/src/Bundle/ChillWopiBundle/src/Service/Wopi/ChillWopi.php b/src/Bundle/ChillWopiBundle/src/Service/Wopi/ChillWopi.php
index 053b9e97b..fc2e0c12a 100644
--- a/src/Bundle/ChillWopiBundle/src/Service/Wopi/ChillWopi.php
+++ b/src/Bundle/ChillWopiBundle/src/Service/Wopi/ChillWopi.php
@@ -58,7 +58,7 @@ final class ChillWopi implements WopiInterface
 
         $mimeType = $storedObject->getType();
 
-        if (false === reset($this->wopiDiscovery->discoverMimeType($mimeType))) {
+        if ([] === $this->wopiDiscovery->discoverMimeType($mimeType)) {
             throw new Exception(sprintf('Unable to find mime type %s', $mimeType));
         }