1 files changed, 3 insertions, 1 deletions
diff --git a/db/migrate/20171201000000_change_account_id_nonnullable_in_lists.rb b/db/migrate/20171201000000_change_account_id_nonnullable_in_lists.rb
index 3369e3b9e..ac86c9e77 100644
--- a/db/migrate/20171201000000_change_account_id_nonnullable_in_lists.rb
+++ b/db/migrate/20171201000000_change_account_id_nonnullable_in_lists.rb
@@ -1,5 +1,7 @@
 class ChangeAccountIdNonnullableInLists < ActiveRecord::Migration[5.1]
   def change
-    change_column_null :lists, :account_id, false
+    safety_assured do
+      change_column_null :lists, :account_id, false
+    end
   end
 end