diff --git a/index.php b/index.php
index f29892e48..087770cf6 100644
--- a/index.php
+++ b/index.php
@@ -188,7 +188,7 @@ $serverlibrary = $serverlibs[$serverprotocol];
 		<script src="<?php echo $serverlibrary; ?>"></script>
 		<script src="/js/teambuilder.js?v0.7.12"></script>
 		<script src="/js/ladder.js?v0.8.2"></script>
-		<script src="/js/sim.js?v0.8.2"></script>
+		<script src="/js/sim.js?v0.8.3"></script>
 
 		<script>
 			document.getElementById('loading-message').innerHTML += ' DONE<br />Connecting to login server...';
diff --git a/js/sim.js b/js/sim.js
index ed96ee00c..b98c1e316 100644
--- a/js/sim.js
+++ b/js/sim.js
@@ -220,6 +220,7 @@ function BattleRoom(id, elem) {
 		}
 	};
 	this.init = function (data) {
+		this.version = (data.version !== undefined) ? data.version : 0;
 		if (selfR.battle.activityQueue) {
 			// re-initialize
 			selfR.battleEnded = false;
@@ -323,6 +324,9 @@ function BattleRoom(id, elem) {
 		}
 		if (update.request) {
 			selfR.me.request = update.request;
+			if (selfR.version > 0) {
+				selfR.send('/ackrequest ' + selfR.me.request.rqid);
+			}
 			selfR.me.request.requestType = 'move';
 			if (selfR.me.request.forceSwitch) {
 				selfR.me.request.requestType = 'switch';