diff --git a/app/assets/javascripts/sitewide/atwho_res.js.erb b/app/assets/javascripts/sitewide/atwho_res.js.erb
index b74f09884..1005daade 100644
--- a/app/assets/javascripts/sitewide/atwho_res.js.erb
+++ b/app/assets/javascripts/sitewide/atwho_res.js.erb
@@ -361,7 +361,7 @@ var SmartAnnotation = (function() {
             }
             _a = decodeURI("%C3%80");
             _y = decodeURI("%C3%BF");
-            regexp = new RegExp(flag + "([A-Za-z" + _a + "-" + _y + "0-9_\\s\+\-\]*)$|" + flag + "([^\\x00-\\xff]*)$", 'gi');
+            regexp = new RegExp(flag + "([A-Za-z" + _a + "-" + _y + "0-9_/:\\s\+\-\]*)$|" + flag + "([^\\x00-\\xff]*)$", 'gi');
             match = regexp.exec(subtext);
             if (match) {
               return match[2] || match[1];