diff --git a/db/migrate/20220330160740_cleanup_selectable_avatars_data.rb b/db/migrate/20220330160740_cleanup_selectable_avatars_data.rb
new file mode 100644
index 00000000000..c13368c3abe
--- /dev/null
+++ b/db/migrate/20220330160740_cleanup_selectable_avatars_data.rb
@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+class CleanupSelectableAvatarsData < ActiveRecord::Migration[7.0]
+  def up
+    # This setting is invalid (a backup from 20200810194943_change_selectable_avatars_site_setting.rb)
+    execute <<~SQL
+      DELETE FROM site_settings
+      WHERE name = 'selectable_avatars_urls'
+    SQL
+  end
+
+  def down
+    raise ActiveRecord::IrreversibleMigration
+  end
+end