diff --git a/actionview/lib/action_view/helpers/url_helper.rb b/actionview/lib/action_view/helpers/url_helper.rb
index 11c7daf4da..fb6426b997 100644
--- a/actionview/lib/action_view/helpers/url_helper.rb
+++ b/actionview/lib/action_view/helpers/url_helper.rb
@@ -548,6 +548,8 @@ module ActionView
         request_uri = url_string.index("?") ? request.fullpath : request.path
         request_uri = URI.parser.unescape(request_uri).force_encoding(Encoding::BINARY)
 
+        url_string.chomp!("/") if url_string.start_with?("/") && url_string != "/"
+
         if url_string =~ /^\w+:\/\//
           url_string == "#{request.protocol}#{request.host_with_port}#{request_uri}"
         else
diff --git a/actionview/test/template/url_helper_test.rb b/actionview/test/template/url_helper_test.rb
index ab56d80de3..6060ea2f1e 100644
--- a/actionview/test/template/url_helper_test.rb
+++ b/actionview/test/template/url_helper_test.rb
@@ -503,6 +503,12 @@ class UrlHelperTest < ActiveSupport::TestCase
     assert current_page?(controller: 'foo', action: 'category', category: 'administração', callback_url: 'http://example.com/foo')
   end
 
+  def test_current_page_with_trailing_slash
+    @request = request_for_url("/posts")
+
+    assert current_page?("/posts/")
+  end
+
   def test_link_unless_current
     @request = request_for_url("/")