diff --git a/sync3/handler/handler.go b/sync3/handler/handler.go
index b513e00..11d4931 100644
--- a/sync3/handler/handler.go
+++ b/sync3/handler/handler.go
@@ -190,10 +190,11 @@ func (h *SyncLiveHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
 		w.WriteHeader(http.StatusMethodNotAllowed)
 		// This is a standard error response.
 		// See M_UNRECOGNIZED in https://spec.matrix.org/v1.10/client-server-api/#common-error-codes
-		_, err := w.Write([]byte("{\"errcode\":\"M_UNRECOGNIZED\",\"error\":\"Wrong request method\"}"))
+		i, err := w.Write([]byte("{\"errcode\":\"M_UNRECOGNIZED\",\"error\":\"Wrong request method\"}"))
 		if err != nil {
 			internal.DecorateLogger(req.Context(), log.Error()).Err(err)
 		}
+		internal.DecorateLogger(req.Context(), log.Info()).Msgf("Wrote %d bytes", i)
 		return
 	}
 	err := h.serve(w, req)