diff --git a/static/js/message_edit.js b/static/js/message_edit.js
index 9121bb42f3..49dd476aa4 100644
--- a/static/js/message_edit.js
+++ b/static/js/message_edit.js
@@ -106,6 +106,8 @@ function edit_message (row, raw_content) {
             row.find('.message_edit_topic_propagate').toggle(new_topic !== original_topic);
         });
     }
+
+    composebox_typeahead.initialize_compose_typeahead("#message_edit_content");
 }
 
 exports.start = function (row) {