diff --git a/lib/models/room.js b/lib/models/room.js
index f97bee21d37..cc8e955a559 100644
--- a/lib/models/room.js
+++ b/lib/models/room.js
@@ -352,9 +352,12 @@ Room.prototype.getAliases = function() {
 
     var alias_events = this.currentState.getStateEvents("m.room.aliases");
     if (alias_events) {
-        for (var alias_event of alias_events) {
+        for (var i = 0; i < alias_events.length; ++i) {
+            var alias_event = alias_events[i];
             if (utils.isArray(alias_event.getContent().aliases)) {
-                Array.prototype.push.apply(alias_strings, alias_event.getContent().aliases);
+                Array.prototype.push.apply(
+                    alias_strings, alias_event.getContent().aliases
+                );
             }
         }
     }