diff --git a/app/controllers/projects_controller.rb b/app/controllers/projects_controller.rb
index 77933666f..0f44be36c 100644
--- a/app/controllers/projects_controller.rb
+++ b/app/controllers/projects_controller.rb
@@ -342,7 +342,7 @@ class ProjectsController < ApplicationController
       if params[:repository] == "pswd_is_null"
         html  << l(:label_password_not_null)
       end
-      flash[:error] = html if !html.to_s.blank?
+      flash.now[:error] = html if !html.to_s.blank?
     end
       scm = params[:repository_scm] || (Redmine::Scm::Base.all & Setting.enabled_scm).first
       @repository = Repository.factory(scm)