diff --git a/openslides/core/static/js/core/projector.js b/openslides/core/static/js/core/projector.js
index 7c025528f..fd769560d 100644
--- a/openslides/core/static/js/core/projector.js
+++ b/openslides/core/static/js/core/projector.js
@@ -171,7 +171,7 @@ angular.module('OpenSlidesApp.core.projector', ['OpenSlidesApp.core'])
         var STEPS = 5;
         $scope.scroll = 0;
         var setScroll = function (scroll) {
-            scroll = 250 * scroll;
+            scroll = -250 * scroll;
             if ($scope.scrollTimeout) {
                 $timeout.cancel($scope.scrollTimeout);
             }