diff --git a/app/coffee/modules/taskboard/charts.coffee b/app/coffee/modules/taskboard/charts.coffee
index 872fe43e..41b1f456 100644
--- a/app/coffee/modules/taskboard/charts.coffee
+++ b/app/coffee/modules/taskboard/charts.coffee
@@ -89,13 +89,15 @@ SprintGraphDirective = ->
         element = angular.element($el)
 
         $scope.$on "resize", ->
-            redrawChart(element, $scope.stats.days)
+            redrawChart(element, $scope.stats.days) if $scope.stats
 
         $scope.$on "taskboard:graph:toggle-visibility", ->
             $el.parent().toggleClass('open')
 
             # fix chart overflow
-            timeout(100, -> redrawChart(element, $scope.stats.days))
+            timeout(100, ->
+                redrawChart(element, $scope.stats.days) if $scope.stats
+            )
 
         $scope.$watch 'stats', (value) ->
             if not $scope.stats?