diff --git a/app/controllers/glossary_categories_controller.rb b/app/controllers/glossary_categories_controller.rb
index 102985f..f40f77b 100644
--- a/app/controllers/glossary_categories_controller.rb
+++ b/app/controllers/glossary_categories_controller.rb
@@ -4,7 +4,7 @@ class GlossaryCategoriesController < ApplicationController
   before_action :find_project_from_id
   
   def index
-    @categories = GlossaryCategory.where(project_id: @project_id)
+    @categories = GlossaryCategory.where(project_id: @project.id)
   end
 
   def show