diff --git a/include/xo/webutil/StreamEndpointDescr.hpp b/include/xo/webutil/StreamEndpointDescr.hpp
index 53aa63c7..93a2e77b 100644
--- a/include/xo/webutil/StreamEndpointDescr.hpp
+++ b/include/xo/webutil/StreamEndpointDescr.hpp
@@ -15,7 +15,7 @@ namespace xo {
 
     namespace web {
         /* a function that creates an event subscription */
-        using StreamSubscribeFn = std::function<fn::CallbackId (ref::rp<reactor::AbstractSink> const & ws_sink)>;
+        using StreamSubscribeFn = std::function<fn::CallbackId (rp<reactor::AbstractSink> const & ws_sink)>;
         using StreamUnsubscribeFn = std::function<void (fn::CallbackId id)>;
 
         /* describes a stream endpoint