diff --git a/app/controllers/my_profile/profile_design_controller.rb b/app/controllers/my_profile/profile_design_controller.rb
index 5a6aa97..456aaec 100644
--- a/app/controllers/my_profile/profile_design_controller.rb
+++ b/app/controllers/my_profile/profile_design_controller.rb
@@ -8,7 +8,8 @@ class ProfileDesignController < BoxOrganizerController
 
   def protect_fixed_block
     block = boxes_holder.blocks.find(params[:id].gsub(/^block-/, ''))
-    if block.fixed && !current_person.is_admin?
+    if !block.nil? && block.fixed && !current_person.is_admin?
+
       render_access_denied
     end
   end
--
libgit2 0.21.2