diff --git a/app/models/repository/git_remote.rb b/app/models/repository/git_remote.rb
index f5c0b2d..a16cf30 100644
--- a/app/models/repository/git_remote.rb
+++ b/app/models/repository/git_remote.rb
@@ -11,6 +11,8 @@ class Repository::GitRemote < Repository::Git
 
   before_validation :initialize_clone
 
+  safe_attributes 'extra_info', :if => lambda {|repository, _user| repository.new_record?}
+
   # TODO: figure out how to do this safely (if at all)
   # before_deletion :rm_removed_repo
   # def rm_removed_repo
diff --git a/lib/redmine_git_remote/repositories_helper_patch.rb b/lib/redmine_git_remote/repositories_helper_patch.rb
index 508ac53..ea6ad68 100644
--- a/lib/redmine_git_remote/repositories_helper_patch.rb
+++ b/lib/redmine_git_remote/repositories_helper_patch.rb
@@ -12,7 +12,7 @@ module RedmineGitRemote
                            :label => l(:field_path_to_repository)) +
                           content_tag('em', l(:text_git_remote_path_note), :class => 'info') +
                           form.text_field(:extra_clone_url, :size => 60, :required => true,
-                           :disabled => !repository.safe_attribute?('url')) +
+                           :disabled => !repository.safe_attribute?('url'), name: 'repository[extra_info][extra_clone_url]') +
                           content_tag('em', l(:text_git_remote_url_note), :class => 'info')
                    )
       end