diff --git a/app/assets/javascripts/admin/controllers/admin_backups_index_controller.js b/app/assets/javascripts/admin/controllers/admin_backups_index_controller.js
index c716ad4f32..119a375aa6 100644
--- a/app/assets/javascripts/admin/controllers/admin_backups_index_controller.js
+++ b/app/assets/javascripts/admin/controllers/admin_backups_index_controller.js
@@ -55,7 +55,10 @@ Discourse.AdminBackupsIndexController = Ember.ArrayController.extend({
           I18n.t("no_value"),
           I18n.t("yes_value"),
           function(confirmed) {
-            if (confirmed) { self._toggleReadOnlyMode(true); }
+            if (confirmed) {
+              Discourse.User.currentProp("hideReadOnlyAlert", true);
+              self._toggleReadOnlyMode(true);
+            }
           }
         );
       } else {
diff --git a/app/assets/javascripts/admin/routes/admin_backups_route.js b/app/assets/javascripts/admin/routes/admin_backups_route.js
index f77cf10b49..c835ea01c2 100644
--- a/app/assets/javascripts/admin/routes/admin_backups_route.js
+++ b/app/assets/javascripts/admin/routes/admin_backups_route.js
@@ -14,6 +14,7 @@ Discourse.AdminBackupsRoute = Discourse.Route.extend({
       this.controllerFor("adminBackups").set("isOperationRunning", false);
       bootbox.alert(I18n.t("admin.backups.operations.failed", { operation: log.operation }));
     } else if (log.message === "[SUCCESS]") {
+      Discourse.User.currentProp("hideReadOnlyAlert", false);
       this.controllerFor("adminBackups").set("isOperationRunning", false);
       if (log.operation === "restore") {
         // redirect to homepage when the restore is done (session might be lost)
@@ -53,6 +54,7 @@ Discourse.AdminBackupsRoute = Discourse.Route.extend({
         I18n.t("yes_value"),
         function(confirmed) {
           if (confirmed) {
+            Discourse.User.currentProp("hideReadOnlyAlert", true);
             Discourse.Backup.start().then(function() {
               self.controllerFor("adminBackupsLogs").clear();
               self.controllerFor("adminBackups").set("isOperationRunning", true);
@@ -99,6 +101,7 @@ Discourse.AdminBackupsRoute = Discourse.Route.extend({
         I18n.t("yes_value"),
         function(confirmed) {
           if (confirmed) {
+            Discourse.User.currentProp("hideReadOnlyAlert", true);
             backup.restore().then(function() {
               self.controllerFor("adminBackupsLogs").clear();
               self.controllerFor("adminBackups").set("isOperationRunning", true);
diff --git a/app/assets/javascripts/discourse/initializers/1_init_message_bus.js b/app/assets/javascripts/discourse/initializers/1_init_message_bus.js
index 8d644b103c..17c114ff82 100644
--- a/app/assets/javascripts/discourse/initializers/1_init_message_bus.js
+++ b/app/assets/javascripts/discourse/initializers/1_init_message_bus.js
@@ -30,7 +30,7 @@ Discourse.addInitializer(function() {
 
   Discourse.MessageBus.subscribe("/global/read-only", function (enabled) {
     Discourse.set("isReadOnly", enabled);
-    if (enabled) {
+    if (enabled && !Discourse.User.currentProp("hideReadOnlyAlert")) {
       bootbox.alert(I18n.t("read_only_mode_enabled"));
     }
   });