1 files changed, 3 insertions, 3 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb
index 9eaac85571..a2bab29b42 100755
--- a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb
@@ -217,21 +217,21 @@ module ActiveRecord
 
       private
         def string_to_date(string)
-          return string if Date === string
+          return string if string.is_a?(Date)
           date_array = ParseDate.parsedate(string)
           # treat 0000-00-00 as nil
           Date.new(date_array[0], date_array[1], date_array[2]) rescue nil
         end
         
         def string_to_time(string)
-          return string if Time === string
+          return string if string.is_a?(Time)
           time_array = ParseDate.parsedate(string).compact
           # treat 0000-00-00 00:00:00 as nil
           Time.send(Base.default_timezone, *time_array) rescue nil
         end
 
         def string_to_dummy_time(string)
-          return string if Time === string
+          return string if string.is_a?(Time)
           time_array = ParseDate.parsedate(string)
           # pad the resulting array with dummy date information
           time_array[0] = 2000; time_array[1] = 1; time_array[2] = 1;