diff --git a/app/controllers/dotations_controller.rb b/app/controllers/dotations_controller.rb
index 417d3e9..ff87a40 100644
--- a/app/controllers/dotations_controller.rb
+++ b/app/controllers/dotations_controller.rb
@@ -84,7 +84,7 @@ class DotationsController < ApplicationController
 
   # Use callbacks to share common setup or constraints between actions.
   def set_dotation
-    @dotation = Dotation.find(params[:id])
+    @dotation = Dotation.friendly.find(params[:id])
   end
 
   def prepare_dependencies
diff --git a/app/helpers/home_helper.rb b/app/helpers/home_helper.rb
index fbc9ba4..e53b6d3 100644
--- a/app/helpers/home_helper.rb
+++ b/app/helpers/home_helper.rb
@@ -3,6 +3,8 @@
 # helper for home
 module HomeHelper
   def change_ammount(ammount)
+    return '' if ammount.blank?
+
     ret = if ammount >= 1_000_000
             "#{ammount / 1_000_000} mln"
           else