diff --git a/activerecord/lib/active_record/relation.rb b/activerecord/lib/active_record/relation.rb
index a51b317dc34ecb8a5f1030f4afc3d82ca4b15f35..fd0660a138b3ff005be3aebf56c615afa8f9238b 100644
--- a/activerecord/lib/active_record/relation.rb
+++ b/activerecord/lib/active_record/relation.rb
@@ -328,6 +328,15 @@ def inspect
       to_a.inspect
     end
 
+    def extend(*args, &block)
+      if block_given?
+        apply_modules Module.new(&block)
+        self
+      else
+        super
+      end
+    end
+
     protected
 
     def method_missing(method, *args, &block)
diff --git a/activerecord/lib/active_record/relation/query_methods.rb b/activerecord/lib/active_record/relation/query_methods.rb
index f7c4c7991b75bf1597995f22ed93b00d37d9fe73..ff5bce9d8b257ad2ce4744b00d9fc2d9accf0a02 100644
--- a/activerecord/lib/active_record/relation/query_methods.rb
+++ b/activerecord/lib/active_record/relation/query_methods.rb
@@ -11,9 +11,8 @@ module QueryMethods
 
         next if [:where, :having, :select].include?(query_method)
         class_eval <<-CEVAL, __FILE__, __LINE__ + 1
-          def #{query_method}(*args, &block)
+          def #{query_method}(*args)
             new_relation = clone
-            new_relation.send(:apply_modules, Module.new(&block)) if block_given?
             value = Array.wrap(args.flatten).reject {|x| x.blank? }
             new_relation.#{query_method}_values += value if value.present?
             new_relation
@@ -21,9 +20,8 @@ def #{query_method}(*args, &block)
         CEVAL
       end
 
-      def reorder(*args, &block)
+      def reorder(*args)
         new_relation = clone
-        new_relation.send(:apply_modules, Module.new(&block)) if block_given?
         value = Array.wrap(args.flatten).reject {|x| x.blank? }
         new_relation.order_values = value if value.present?
         new_relation
@@ -42,9 +40,8 @@ def select(*args)
 
       [:where, :having].each do |query_method|
         class_eval <<-CEVAL, __FILE__, __LINE__ + 1
-          def #{query_method}(*args, &block)
+          def #{query_method}(*args)
             new_relation = clone
-            new_relation.send(:apply_modules, Module.new(&block)) if block_given?
             value = build_where(*args)
             new_relation.#{query_method}_values += Array.wrap(value) if value.present?
             new_relation
@@ -56,9 +53,8 @@ def #{query_method}(*args, &block)
         attr_accessor :"#{query_method}_value"
 
         class_eval <<-CEVAL, __FILE__, __LINE__ + 1
-          def #{query_method}(value = true, &block)
+          def #{query_method}(value = true)
             new_relation = clone
-            new_relation.send(:apply_modules, Module.new(&block)) if block_given?
             new_relation.#{query_method}_value = value
             new_relation
           end
diff --git a/activerecord/test/cases/relations_test.rb b/activerecord/test/cases/relations_test.rb
index d37f7bd09c06d49550294538fe53857bca672bc2..d27a69ea1cf01487c97a0f5dd94f3b154357acca 100644
--- a/activerecord/test/cases/relations_test.rb
+++ b/activerecord/test/cases/relations_test.rb
@@ -618,7 +618,7 @@ def test_except
   end
 
   def test_anonymous_extension
-    relation = Post.where(:author_id => 1).order('id ASC') do
+    relation = Post.where(:author_id => 1).order('id ASC').extend do
       def author
         'lifo'
       end