diff --git a/app/coffee/modules/common/components.coffee b/app/coffee/modules/common/components.coffee
index dc323829..b0fcd153 100644
--- a/app/coffee/modules/common/components.coffee
+++ b/app/coffee/modules/common/components.coffee
@@ -410,6 +410,8 @@ TgProgressBarDirective = ->
         element = angular.element($el)
 
         $scope.$watch $attrs.tgProgressBar, (percentage) ->
+            percentage = _.max([0 , percentage])
+            percentage = _.min([100, percentage])
             render($el, percentage)
 
         $scope.$on "$destroy", ->