diff --git a/api/src/Mail.php b/api/src/Mail.php
index a3d2fefae5..24bfe313a2 100644
--- a/api/src/Mail.php
+++ b/api/src/Mail.php
@@ -6933,7 +6933,7 @@ class Mail
 			case 'vfs':
 				break;
 			case 'egw-data':
-				$message = Link::get_data(parse_url($tmpFileName, PHP_URL_HOST), true);
+				$message = ($host = parse_url($tmpFileName, PHP_URL_HOST)) ? Link::get_data($host, true) : false;
 				break;
 			default:
 				$tmpFileName = $GLOBALS['egw_info']['server']['temp_dir'].'/'.basename($tmpFileName);