diff --git a/app/helpers/repositories_helper.rb b/app/helpers/repositories_helper.rb
index 3555895b..0e0f94c7 100644
--- a/app/helpers/repositories_helper.rb
+++ b/app/helpers/repositories_helper.rb
@@ -147,7 +147,7 @@ module RepositoriesHelper
 
   def subversion_field_tags(form, repository)
       content_tag('p', form.text_field(:url, :size => 60, :required => true, :disabled => (repository && !repository.root_url.blank?)) +
-                       '<br />(http://, https://, svn://, file:///)') +
+                       '<br />(file:///, http://, https://, svn://, svn+[tunnelscheme]://)') +
       content_tag('p', form.text_field(:login, :size => 30)) +
       content_tag('p', form.password_field(:password, :size => 30, :name => 'ignore',
                                            :value => ((repository.new_record? || repository.password.blank?) ? '' : ('x'*15)),
diff --git a/app/models/repository/subversion.rb b/app/models/repository/subversion.rb
index 98d05e61..fdda488d 100644
--- a/app/models/repository/subversion.rb
+++ b/app/models/repository/subversion.rb
@@ -20,7 +20,7 @@ require 'redmine/scm/adapters/subversion_adapter'
 class Repository::Subversion < Repository
   attr_protected :root_url
   validates_presence_of :url
-  validates_format_of :url, :with => /^(http|https|svn|svn\+ssh|file):\/\/.+/i
+  validates_format_of :url, :with => /^(http|https|svn(\+[^\s:\/\\]+)?|file):\/\/.+/i
 
   def scm_adapter
     Redmine::Scm::Adapters::SubversionAdapter