diff --git a/resources/celerity/map.php b/resources/celerity/map.php
--- a/resources/celerity/map.php
+++ b/resources/celerity/map.php
@@ -7,7 +7,7 @@
  */
 return array(
   'names' => array(
-    'conpherence.pkg.css' => '0e3cf785',
+    'conpherence.pkg.css' => '76ed87e3',
     'conpherence.pkg.js' => '020aebcf',
     'core.pkg.css' => '2ba11212',
     'core.pkg.js' => '66c49ca1',
@@ -53,7 +53,7 @@
     'rsrc/css/application/conpherence/header-pane.css' => 'c9a3db8e',
     'rsrc/css/application/conpherence/menu.css' => '67f4680d',
     'rsrc/css/application/conpherence/message-pane.css' => 'd244db1e',
-    'rsrc/css/application/conpherence/notification.css' => '6a3d4e58',
+    'rsrc/css/application/conpherence/notification.css' => '85c48def',
     'rsrc/css/application/conpherence/participant-pane.css' => '69e0058a',
     'rsrc/css/application/conpherence/transaction.css' => '3a3f5e7e',
     'rsrc/css/application/contentsource/content-source-view.css' => 'cdf0d579',
@@ -553,7 +553,7 @@
     'conpherence-header-pane-css' => 'c9a3db8e',
     'conpherence-menu-css' => '67f4680d',
     'conpherence-message-pane-css' => 'd244db1e',
-    'conpherence-notification-css' => '6a3d4e58',
+    'conpherence-notification-css' => '85c48def',
     'conpherence-participant-pane-css' => '69e0058a',
     'conpherence-thread-manager' => 'aec8e38c',
     'conpherence-transaction-css' => '3a3f5e7e',
diff --git a/webroot/rsrc/css/application/conpherence/notification.css b/webroot/rsrc/css/application/conpherence/notification.css
--- a/webroot/rsrc/css/application/conpherence/notification.css
+++ b/webroot/rsrc/css/application/conpherence/notification.css
@@ -84,3 +84,8 @@
   font-weight: normal;
   color: {$greytext};
 }
+
+/* On small devices the Persistent Chat is already hidden, and so its option */
+.device .phabricator-notification-header .persistent-option {
+  display: none;
+}