diff --git a/src/Handler/ResumableJSUploadHandler.php b/src/Handler/ResumableJSUploadHandler.php
index 59f79f2..7a70ae9 100644
--- a/src/Handler/ResumableJSUploadHandler.php
+++ b/src/Handler/ResumableJSUploadHandler.php
@@ -43,7 +43,7 @@ public function __construct(Request $request, $file, $config)
      */
     public function getChunkFileName()
     {
-        return $this->createChunkFileName($this->fileUuid, $this->getCurrentChunk());
+        return $this->createChunkFileName(substr($this->fileUuid,0,40), $this->getCurrentChunk());
     }
 
     /**