diff --git a/activerecord/lib/active_record/counter_cache.rb b/activerecord/lib/active_record/counter_cache.rb
index 3e637ad2b2..020f4b872e 100644
--- a/activerecord/lib/active_record/counter_cache.rb
+++ b/activerecord/lib/active_record/counter_cache.rb
@@ -106,7 +106,7 @@ def update_counters(id, counters)
 
         if touch
           object = find(id)
-          touch_updates(object, touch).map do |column, touch_time|
+          touch_updates(object, touch).each do |column, touch_time|
             updates << "#{connection.quote_column_name(column.to_s)} = #{connection.quote(touch_time)}"
           end
         end