diff --git a/app/controllers/rubriken_controller.rb b/app/controllers/rubriken_controller.rb
index 966edf1..6a059e7 100755
--- a/app/controllers/rubriken_controller.rb
+++ b/app/controllers/rubriken_controller.rb
@@ -16,7 +16,7 @@ class RubrikenController < ApplicationController
     @rubriken= Rubrik.accessible_by(current_ability, :show)
     @neuigkeiten = Neuigkeit.accessible_by(current_ability, :list).page(params[:page]).per(3)
     
-    @calentries= (@rubriken.map {|r| r.calendar.calentries.of_month(Date.new(params[:year],params[:month],1))}).flatten.select {|c| c.object !=nil}
+    @calentries= (@rubriken.map {|r| r.calendar.calentries.of_month(Date.new(params[:year].to_i,params[:month].to_i,1))}).flatten.select {|c| c.object !=nil}
     respond_to do |format|
       format.html
       format.js {render action: :show}