diff --git a/activerecord/lib/active_record/railties/databases.rake b/activerecord/lib/active_record/railties/databases.rake
index b25c0270c2a4470afca5d17c5ecc1f2f878fc549..259d0ff12bc39b47327f3ddaba376d848ac00d78 100644
--- a/activerecord/lib/active_record/railties/databases.rake
+++ b/activerecord/lib/active_record/railties/databases.rake
@@ -300,7 +300,9 @@ db_namespace = namespace :db do
       end
 
       if ActiveRecord::Base.connection.supports_migrations?
-        File.open(filename, "a") { |f| f << ActiveRecord::Base.connection.dump_schema_information }
+        File.open(filename, "a") do |f|
+          f.puts ActiveRecord::Base.connection.dump_schema_information
+        end
       end
       db_namespace['structure:dump'].reenable
     end