diff -r b7d79db348e7 -r c8f651e7e4ff server/src/app/Services/TranscriptManagerInterface.php
--- a/server/src/app/Services/TranscriptManagerInterface.php	Tue Nov 08 02:22:50 2016 +0100
+++ b/server/src/app/Services/TranscriptManagerInterface.php	Tue Nov 08 09:01:38 2016 +0100
@@ -5,7 +5,7 @@
 
 interface TranscriptManagerInterface {
 
-    function getConverter(string $converterKey, Document $document, string $source);
-    function getConverterUrl(string $converterKey, Document $document, string $url);
+    function getConverter($converterKey, Document $document, $source);
+    function getConverterUrl($converterKey, Document $document, $url);
 
 }