diff --git a/app/store/ServicesList.js b/app/store/ServicesList.js
index 0e9ef819..3fe2d703 100644
--- a/app/store/ServicesList.js
+++ b/app/store/ServicesList.js
@@ -37,7 +37,7 @@ Ext.define('Rambox.store.ServicesList', {
 			,description: locale['services[1]']
 			,url: 'https://___.slack.com/'
 			,type: 'messaging'
-			,js_unread: 'function checkUnread(){var e=$(".p-channel_sidebar__channel--unread:not(.p-channel_sidebar__channel--muted)").length,a=0;$(".p-channel_sidebar__badge").each(function(){a+=isNaN(parseInt($(this).html()))?0:parseInt($(this).html())}),updateBadge(e,a)}function updateBadge(e,a){var n=a>0?"("+a+") ":e>0?"(•) ":"";document.title=n+originalTitle}var originalTitle=document.title;setInterval(checkUnread,3e3);'
+			,js_unread: 'function checkUnread(){var e=$(".p-channel_sidebar__channel--unread:not(.p-channel_sidebar__channel--muted)").length,n=0;$(".p-channel_sidebar__badge").each(function(){n+=isNaN(parseInt($(this).html()))?0:parseInt($(this).html())}),count=0<n?n:0<e?"•":0,updateBadge(count)}function updateBadge(e){1<=e||"•"===e?rambox.setUnreadCount(e):rambox.clearUnreadCount();}setInterval(checkUnread,3e3);'
 		},
 		{
 			 id: 'noysi'
diff --git a/app/ux/WebView.js b/app/ux/WebView.js
index 70139821..d7eb9e01 100644
--- a/app/ux/WebView.js
+++ b/app/ux/WebView.js
@@ -477,14 +477,15 @@ Ext.define('Rambox.ux.WebView',{
 
 			/**
 			 * Handles 'rambox.setUnreadCount' messages.
-			 * Sets the badge text if the event contains an integer as first argument.
+			 * Sets the badge text if the event contains an integer
+                         * or a '•' (indicating non-zero but unknown number of unreads) as first argument.
 			 *
 			 * @param event
 			 */
 			function handleSetUnreadCount(event) {
 				if (Array.isArray(event.args) === true && event.args.length > 0) {
 					var count = event.args[0];
-					if (count === parseInt(count, 10)) {
+					if (count === parseInt(count, 10) || "•" === count) {
 						me.setUnreadCount(count);
 					}
 				}