diff --git a/app/controllers/admins/project_categories_controller.rb b/app/controllers/admins/project_categories_controller.rb
index 3b5065a16..8b1dd1f77 100644
--- a/app/controllers/admins/project_categories_controller.rb
+++ b/app/controllers/admins/project_categories_controller.rb
@@ -5,7 +5,7 @@ class Admins::ProjectCategoriesController < Admins::BaseController
   def index 
     sort_by = ProjectCategory.column_names.include?(params[:sort_by]) ? params[:sort_by] : 'created_at'
     sort_direction = %w(desc asc).include?(params[:sort_direction]) ? params[:sort_direction] : 'desc'
-    q = ProjectCategory.includes(:projects).ransack(name_cont: params[:name])
+    q = ProjectCategory.ransack(name_cont: params[:name])
     project_categories = q.result(distinct: true).order("#{sort_by} #{sort_direction}")
     @project_categories = paginate(project_categories)
     
diff --git a/app/views/admins/project_categories/_list.html.erb b/app/views/admins/project_categories/_list.html.erb
index 1a460a486..1a1626bc4 100644
--- a/app/views/admins/project_categories/_list.html.erb
+++ b/app/views/admins/project_categories/_list.html.erb
@@ -20,7 +20,7 @@
         </td>
         <td><%= project_category.pinned_index == 0 ? "" : "√" %></td>
         <td><%= project_category.projects_count %></td>
-        <td><%= project_category.projects.where(is_pinned: true).size %></td>
+        <td><%= project_category.projects.select(:id).where(is_pinned: true).size %></td>
         <td><%= project_category.created_at&.strftime('%Y-%m-%d %H:%M') %></td>
         <td class="action-container">
         <%= link_to "编辑", edit_admins_project_category_path(project_category), remote: true, class: "action" %>