diff --git a/app/assets/javascripts/discourse/lib/autocomplete.js.es6 b/app/assets/javascripts/discourse/lib/autocomplete.js.es6
index 77ae8075719..78690f624b5 100644
--- a/app/assets/javascripts/discourse/lib/autocomplete.js.es6
+++ b/app/assets/javascripts/discourse/lib/autocomplete.js.es6
@@ -6,7 +6,7 @@
 
 export var CANCELLED_STATUS = "__CANCELLED";
 
-const allowedLettersRegex = /[\s\t\[\{\(]/;
+const allowedLettersRegex = /[\s\t\[\{\(\/]/;
 
 var keys = {
   backSpace: 8,