diff --git a/CHANGELOG.md b/CHANGELOG.md
index 992c36ba7..00100da05 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@
 - Fix a bug: when machines module disabled, Associated machines is still shown in trainings list
 - Fix a bug: script mount-proof-of-identity-files unable to modify docker-compose.yml
 - Fix a bug: Event reservation calendar encoding in mail
+- Fix a bug: Missing of description of PlanCategory migration
 
 ## v5.4.0 2022 May 12
 
diff --git a/app/models/plan_category.rb b/app/models/plan_category.rb
index cf4d11e0d..6c8633883 100644
--- a/app/models/plan_category.rb
+++ b/app/models/plan_category.rb
@@ -6,5 +6,5 @@
 # - plan_category
 # - plan
 class PlanCategory < ApplicationRecord
-  has_many :plan, dependent: :nullify
+  has_many :plans, dependent: :nullify
 end
diff --git a/db/migrate/20220517140916_add_description_to_plan_category.rb b/db/migrate/20220517140916_add_description_to_plan_category.rb
new file mode 100644
index 000000000..223c34b07
--- /dev/null
+++ b/db/migrate/20220517140916_add_description_to_plan_category.rb
@@ -0,0 +1,5 @@
+class AddDescriptionToPlanCategory < ActiveRecord::Migration[5.2]
+  def change
+    add_column :plan_categories, :description, :text
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index dfff7c3fd..b49a86421 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2022_05_09_105714) do
+ActiveRecord::Schema.define(version: 2022_05_17_140916) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "fuzzystrmatch"
@@ -1021,8 +1021,8 @@ ActiveRecord::Schema.define(version: 2022_05_09_105714) do
     t.boolean "is_allow_newsletter"
     t.inet "current_sign_in_ip"
     t.inet "last_sign_in_ip"
-    t.string "mapped_from_sso"
     t.datetime "validated_at"
+    t.string "mapped_from_sso"
     t.index ["auth_token"], name: "index_users_on_auth_token"
     t.index ["confirmation_token"], name: "index_users_on_confirmation_token", unique: true
     t.index ["email"], name: "index_users_on_email", unique: true