Fix #2845
diff --git a/system/helpers/download_helper.php b/system/helpers/download_helper.php
index 4fe6a0e..9a6f684 100644
--- a/system/helpers/download_helper.php
+++ b/system/helpers/download_helper.php
@@ -120,7 +120,7 @@
 		// Clean output buffer
 		if (ob_get_level() !== 0 && @ob_end_clean() === FALSE)
 		{
-			ob_clean();
+			@ob_clean();
 		}
 
 		// Generate the server headers