diff --git a/actionpack/lib/action_dispatch/routing/mapper.rb b/actionpack/lib/action_dispatch/routing/mapper.rb
index 8dfac30ac038bf008f90b97e03db99c29b37d685..34d75e55b69eca3910e725ce71fa38db02b99a74 100644
--- a/actionpack/lib/action_dispatch/routing/mapper.rb
+++ b/actionpack/lib/action_dispatch/routing/mapper.rb
@@ -80,15 +80,19 @@ def resource(*resources, &block)
           resource = SingletonResource.new(resources.pop, :name_prefix => name_prefix)
 
           if @scope[:scope_level] == :resources
-            member do
-              resource(resource.name, options, &block)
+            parent_resource = @scope[:scope_level_options][:name]
+            parent_named_prefix = @scope[:scope_level_options][:name_prefix]
+            with_scope_level(:member) do
+              scope(":#{parent_resource}_id", :name_prefix => parent_named_prefix) do
+                resource(resource.name, options, &block)
+              end
             end
             return self
           end
 
           controller(resource.controller) do
             namespace(resource.name) do
-              with_scope_level(:resource, :name => resource.singular) do
+              with_scope_level(:resource, :name => resource.singular, :name_prefix => resource.member_name) do
                 yield if block_given?
 
                 get "", :to => :show, :as => resource.member_name
@@ -118,8 +122,9 @@ def resources(*resources, &block)
 
           if @scope[:scope_level] == :resources
             parent_resource = @scope[:scope_level_options][:name]
+            parent_named_prefix = @scope[:scope_level_options][:name_prefix]
             with_scope_level(:member) do
-              scope(":#{parent_resource}_id", :name_prefix => parent_resource) do
+              scope(":#{parent_resource}_id", :name_prefix => parent_named_prefix) do
                 resources(resource.name, options, &block)
               end
             end
@@ -128,7 +133,7 @@ def resources(*resources, &block)
 
           controller(resource.controller) do
             namespace(resource.name) do
-              with_scope_level(:resources, :name => resource.singular) do
+              with_scope_level(:resources, :name => resource.singular, :name_prefix => resource.member_name) do
                 yield if block_given?
 
                 collection do
diff --git a/actionpack/test/dispatch/routing_test.rb b/actionpack/test/dispatch/routing_test.rb
index 496445fc34018403e3d8150deb0a955a783e43c1..b8bcdc280893935020f0cf7b0aaa245a4f9ab4cc 100644
--- a/actionpack/test/dispatch/routing_test.rb
+++ b/actionpack/test/dispatch/routing_test.rb
@@ -251,9 +251,7 @@ def test_projects_companies
 
       get '/projects/1/companies/1/people'
       assert_equal 'people#index', @response.body
-      pending do
-        assert_equal '/projects/1/companies/1/people', project_company_people_path(:project_id => '1', :company_id => '1')
-      end
+      assert_equal '/projects/1/companies/1/people', project_company_people_path(:project_id => '1', :company_id => '1')
 
       get '/projects/1/companies/1/avatar'
       assert_equal 'avatars#show', @response.body
@@ -345,9 +343,7 @@ def test_projects_posts
 
       get '/projects/1/posts/1/comments'
       assert_equal 'comments#index', @response.body
-      pending do
-        assert_equal '/projects/1/posts/1/comments', project_post_comments_path(:project_id => '1', :post_id => '1')
-      end
+      assert_equal '/projects/1/posts/1/comments', project_post_comments_path(:project_id => '1', :post_id => '1')
 
       post '/projects/1/posts/1/comments/preview'
       assert_equal 'comments#preview', @response.body