diff --git a/src/main/java/eu/siacs/conversations/services/NotificationService.java b/src/main/java/eu/siacs/conversations/services/NotificationService.java
index d1e41a746..5305ae5a4 100644
--- a/src/main/java/eu/siacs/conversations/services/NotificationService.java
+++ b/src/main/java/eu/siacs/conversations/services/NotificationService.java
@@ -52,6 +52,8 @@ import eu.siacs.conversations.xmpp.XmppConnection;
 
 public class NotificationService {
 
+	public static final Object CATCHUP_LOCK = new Object();
+
 	private static final String CONVERSATIONS_GROUP = "eu.siacs.conversations";
 	private final XmppConnectionService mXmppConnectionService;
 
@@ -173,7 +175,7 @@ public class NotificationService {
 	}
 
 	public void push(final Message message) {
-		synchronized (message.getConversation().getAccount()) {
+		synchronized (CATCHUP_LOCK) {
 			final XmppConnection connection = message.getConversation().getAccount().getXmppConnection();
 			if (connection.isWaitingForSmCatchup()) {
 				connection.incrementSmCatchupMessageCounter();
diff --git a/src/main/java/eu/siacs/conversations/xmpp/XmppConnection.java b/src/main/java/eu/siacs/conversations/xmpp/XmppConnection.java
index 90585d9f3..fc4bf3102 100644
--- a/src/main/java/eu/siacs/conversations/xmpp/XmppConnection.java
+++ b/src/main/java/eu/siacs/conversations/xmpp/XmppConnection.java
@@ -64,6 +64,7 @@ import eu.siacs.conversations.entities.Account;
 import eu.siacs.conversations.entities.Message;
 import eu.siacs.conversations.entities.ServiceDiscoveryResult;
 import eu.siacs.conversations.generator.IqGenerator;
+import eu.siacs.conversations.services.NotificationService;
 import eu.siacs.conversations.services.XmppConnectionService;
 import eu.siacs.conversations.utils.DNSHelper;
 import eu.siacs.conversations.utils.SSLSocketHelper;
@@ -617,15 +618,20 @@ public class XmppConnection implements Runnable {
 				final AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
 				tagWriter.writeStanzaAsync(ack);
 			} else if (nextTag.isStart("a")) {
-				synchronized (account) {
+				boolean accountUiNeedsRefresh = false;
+				synchronized (NotificationService.CATCHUP_LOCK) {
 					if (mWaitingForSmCatchup.compareAndSet(true, false)) {
 						int count = mSmCatchupMessageCounter.get();
 						Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": SM catchup complete (" + count + ")");
+						accountUiNeedsRefresh = true;
 						if (count > 0) {
 							mXmppConnectionService.getNotificationService().finishBacklog(true, account);
 						}
 					}
 				}
+				if (accountUiNeedsRefresh) {
+					mXmppConnectionService.updateAccountUi();
+				}
 				final Element ack = tagReader.readElement(nextTag);
 				lastPacketReceived = SystemClock.elapsedRealtime();
 				try {