diff --git a/src/views/app.html b/src/views/app.html
index e8c62eee5..6b5eb7faa 100644
--- a/src/views/app.html
+++ b/src/views/app.html
@@ -1214,7 +1214,7 @@
             <span ng-show="!app.appStoreId" class="text-danger pull-right">{{ 'app.updates.info.customAppUpdateInfo' | tr }}</span>
           </div>
           <div class="col-md-12" ng-show="config.update[app.id].manifest.version && config.update[app.id].manifest.version !== app.manifest.version && app.installationState !== 'pending_update'">
-            <button type="button" class="btn btn-success pull-right" ng-click="updates.askUpdate()" ng-disabled="app.taskId || app.error || app.runState === 'stopped'" tooltip-enable="app.error || app.taskId || app.runState === 'stopped'" uib-tooltip="{{ app.error ? 'App is in error state' : 'App is not running' }}">{{ 'app.updates.info.updateAvailableAction' | tr }}</button>
+            <button type="button" class="btn pull-right" ng-class="config.update[app.id].unstable ? 'btn-danger' : 'btn-success'" ng-click="updates.askUpdate()" ng-disabled="app.taskId || app.error || app.runState === 'stopped'" tooltip-enable="app.error || app.taskId || app.runState === 'stopped'" uib-tooltip="{{ app.error ? 'App is in error state' : 'App is not running' }}">{{ 'app.updates.info.updateAvailableAction' | tr }}</button>
           </div>
         </div>
         <hr/>