diff --git a/src/views/app.html b/src/views/app.html
index ce4e7549e..9c779df44 100644
--- a/src/views/app.html
+++ b/src/views/app.html
@@ -975,7 +975,7 @@
         <div class="row">
           <div class="col-md-12">
             <label class="control-label" style="display: block;">{{ 'app.storage.appdata.title' | tr }} <sup><a ng-href="https://docs.cloudron.io/apps/#data-directory" class="help" target="_blank"><i class="fa fa-question-circle"></i></a></sup></label>
-            <p ng-bind-html="'app.storage.appdata.diskUsage' | tr:{ size: '<b>' + (diskUsage | prettyDiskSize) + '</b>', date: (diskUsageDate | prettyDate) }"></p>
+            <p ng-show="diskUsage !== -1" ng-bind-html="'app.storage.appdata.diskUsage' | tr:{ size: '<b>' + (diskUsage | prettyDiskSize) + '</b>', date: (diskUsageDate | prettyDate) }"></p>
             <p ng-bind-html="'app.storage.appdata.description' | tr:{ storagePath: ('/home/yellowtent/appsdata/' + app.id) }"></p>
             <form role="form" name="storageDataDirForm" ng-submit="storage.submitDataDir()" autocomplete="off">
               <select class="form-control" ng-model="storage.location" ng-options="location.displayName for location in storage.locationOptions track by location.id"></select>
diff --git a/src/views/app.js b/src/views/app.js
index 2fdca67e2..3c9065719 100644
--- a/src/views/app.js
+++ b/src/views/app.js
@@ -52,7 +52,7 @@ angular.module('Application').controller('AppController', ['$scope', '$location'
     $scope.groups = [];
     $scope.users = [];
     $scope.backupConfig = null;
-    $scope.diskUsage = 0;
+    $scope.diskUsage = -1;
     $scope.diskUsageDate = 0;
 
     $scope.APP_TYPES = APP_TYPES;
@@ -1934,7 +1934,7 @@ angular.module('Application').controller('AppController', ['$scope', '$location'
     }
 
     function fetchDiskUsage(callback) {
-        $scope.diskUsage = 0;
+        $scope.diskUsage = -1;
         $scope.diskUsageDate = 0;
 
         Client.diskUsage(function (error, result) {