diff --git a/db/fixtures/learning_time_frames.yml b/db/fixtures/learning_time_frames.yml
index 04eefee752e..ebc269d89c3 100644
--- a/db/fixtures/learning_time_frames.yml
+++ b/db/fixtures/learning_time_frames.yml
@@ -1,5 +1,3 @@
-# Read about fixtures at https://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
-
 <% week_days = { '日' => 'sun', '月' => 'mon', '火' => 'tue', '水' => 'wed', '木' => 'thu', '金' => 'fri', '土' => 'sat' } %>
 <% week_days.each_with_index do |(day_name, day_prefix), day_index| %>
   <% (0..23).each_with_index do |hour, hour_index| %>
diff --git a/test/fixtures/learning_time_frames.yml b/test/fixtures/learning_time_frames.yml
index 04eefee752e..ebc269d89c3 100644
--- a/test/fixtures/learning_time_frames.yml
+++ b/test/fixtures/learning_time_frames.yml
@@ -1,5 +1,3 @@
-# Read about fixtures at https://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
-
 <% week_days = { '日' => 'sun', '月' => 'mon', '火' => 'tue', '水' => 'wed', '木' => 'thu', '金' => 'fri', '土' => 'sat' } %>
 <% week_days.each_with_index do |(day_name, day_prefix), day_index| %>
   <% (0..23).each_with_index do |hour, hour_index| %>