diff --git a/app/controllers/posts_controller.rb b/app/controllers/posts_controller.rb
index 05ae273..6b69fd6 100644
--- a/app/controllers/posts_controller.rb
+++ b/app/controllers/posts_controller.rb
@@ -154,7 +154,7 @@ class PostsController < ApplicationController
   #
   # @return [Hash]
   def filter_params
-    @filter_params ||= params.permit(:q, :category, :layout, :page).to_h.select { |_, v| v.present? }
+    @filter_params ||= params.permit(:q, :category, :layout, :page).to_hash.select { |_, v| v.present? }
   end
 
   def site