diff --git a/prototype/UI/index.html b/prototype/UI/index.html
index bbc74a2fb..993b6ee54 100644
--- a/prototype/UI/index.html
+++ b/prototype/UI/index.html
@@ -62,7 +62,7 @@
function patch(patch) {
var before = document.getElementById("before");
var after = document.getElementById("after");
- // fixme: handle annotated terms
+
if (patch.delete != null) { return term(patch.delete, before); }
if (patch.insert != null) { return term(patch.insert, after); }
if (patch.replace != null) {