diff --git a/awx/ui/client/legacy/styles/ansible-ui.less b/awx/ui/client/legacy/styles/ansible-ui.less
index dcd4a9bcce..a34cfce45f 100644
--- a/awx/ui/client/legacy/styles/ansible-ui.less
+++ b/awx/ui/client/legacy/styles/ansible-ui.less
@@ -2307,6 +2307,10 @@ input[disabled].ui-spinner-input {
     background: @default-bg;
 }
 
+.ui-dialog.no-close button.close {
+    display: none;
+}
+
 html { height: 100%; }
 
 body {
diff --git a/awx/ui/client/src/login/authenticationServices/timer.factory.js b/awx/ui/client/src/login/authenticationServices/timer.factory.js
index 37d61a9349..6f36a1ce5d 100644
--- a/awx/ui/client/src/login/authenticationServices/timer.factory.js
+++ b/awx/ui/client/src/login/authenticationServices/timer.factory.js
@@ -157,6 +157,7 @@ export default
                                 title: i18n._("Idle Session"),
                                 scope: $rootScope,
                                 buttons: buttons,
+                                dialogClass: "no-close",
                                 width: 470,
                                 height: 240,
                                 minWidth: 200,