--- a/src/httpfs.hxx
+++ b/src/httpfs.hxx
@@ -29,7 +29,7 @@
                        const std::string& friendlyname,
                        bool enableAV, bool enableOH, bool enableReceiver,
                        bool enableL16,
-                       bool enableMediaServer,
+                       bool enableMediaServer, bool msonly,
                        const std::string& iconpath,
                        const std::string& presentationhtml
     );