diff --git a/actionpack/lib/action_controller/routing/segments.rb b/actionpack/lib/action_controller/routing/segments.rb
index aacea4063d1a5..1911427d61fba 100644
--- a/actionpack/lib/action_controller/routing/segments.rb
+++ b/actionpack/lib/action_controller/routing/segments.rb
@@ -240,10 +240,6 @@ def regexp_chunk
         "(?i-:(#{(regexp || Regexp.union(*possible_names)).source}))"
       end
 
-      def number_of_captures
-        1
-      end
-
       # Don't URI.escape the controller name since it may contain slashes.
       def interpolation_chunk(value_code = local_name)
         "\#{#{value_code}.to_s}"
diff --git a/actionpack/test/controller/routing_test.rb b/actionpack/test/controller/routing_test.rb
index 98b79dbc577c1..2be36d468795f 100644
--- a/actionpack/test/controller/routing_test.rb
+++ b/actionpack/test/controller/routing_test.rb
@@ -893,6 +893,16 @@ def test_route_with_regexp_for_controller
       assert_equal '/content/foo', rs.generate(:controller => "content", :action => "foo")
     end
 
+    def test_route_with_regexp_and_captures_for_controller
+      rs.draw do |map|
+        map.connect ':controller/:action/:id', :controller => /admin\/(accounts|users)/
+      end
+      assert_equal({:controller => "admin/accounts", :action => "index"}, rs.recognize_path("/admin/accounts"))
+      assert_equal({:controller => "admin/users", :action => "index"}, rs.recognize_path("/admin/users"))
+      assert_raises(ActionController::RoutingError) { rs.recognize_path("/admin/products") }
+    end
+
+
     def test_route_with_regexp_and_dot
       rs.draw do |map|
         map.connect ':controller/:action/:file',