diff --git a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
index aa2a6ca71b..a2eaac549e 100644
--- a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
@@ -111,10 +111,6 @@ module ActiveRecord
         63
       end
 
-      def requires_order_columns_in_distinct_clause? # :nodoc:
-        true
-      end
-
       # QUOTING ==================================================
 
       def quote(value, column = nil)