diff --git a/app/assets/images/announcement-default.jpg b/app/assets/images/announcement-default-2.jpg
similarity index 100%
rename from app/assets/images/announcement-default.jpg
rename to app/assets/images/announcement-default-2.jpg
diff --git a/app/controllers/announcements_controller.rb b/app/controllers/announcements_controller.rb
index fa6de5d..d44f615 100644
--- a/app/controllers/announcements_controller.rb
+++ b/app/controllers/announcements_controller.rb
@@ -1,5 +1,6 @@
 class AnnouncementsController < ApplicationController
   include AnnouncementsHelper
+  DefaultImgSrc = "/assets/announcement-default.jpg\" onerror=\"this.src=&quot;/assets/announcement-default-2.jpg&quot;;this.onerror='';"
   def initialize
     super
     @app_title = 'announcement'
@@ -126,7 +127,7 @@ class AnnouncementsController < ApplicationController
           "is_top" => (a.is_top? ? 1 : 0),
           "link_to_show" => link_to_show+"\" #{(link_to_show[0] == '/' rescue true) ? '' : 'target="_blank"'} title=\"#{title}",
           "target" => target,
-          "img_src" => image_url || "/assets/announcement-default.jpg",
+          "img_src" => image_url || DefaultImgSrc,
           "img_description" => desc,
           "more" => t("announcement.more"),
           "view_count" => a.view_count
@@ -743,7 +744,7 @@ class AnnouncementsController < ApplicationController
     img_src = nil
     img_description = nil
     subtitle_ann = announcement.subtitle if announcement.display_subtitle?
-    img_src = (announcement.image.url || "/assets/announcement-default.jpg") if announcement.display_img?
+    img_src = (announcement.image.url || DefaultImgSrc) if announcement.display_img?
     img_description = announcement.image_description if (announcement.image_description.present?) && (announcement.display_img?)
     show_comment_flag = announcement.open_comment_for_user(OrbitHelper.current_user)
     bulletin_carousel_images = announcement.bulletin_carousel_images.map{|image| {"src"=>image.file.url,"description"=>image.description.to_s,"description_text"=>image.description_text }}
@@ -851,7 +852,7 @@ class AnnouncementsController < ApplicationController
     img_description = nil
     img_description = announcement["image_description_translations"][I18n.locale] if announcement['display_img']
     img_src = nil
-    img_src = (announcement['image']['original'] || "/assets/announcement-default.jpg") if announcement['display_img']
+    img_src = (announcement['image']['original'] || DefaultImgSrc) if announcement['display_img']
     subtitle_ann = announcement['subtitle_ann']
     request = OrbitHelper.request
     if announcement["subtitle_translations"].present?
@@ -979,7 +980,7 @@ class AnnouncementsController < ApplicationController
           "is_top" => (a.is_top? ? 1 : 0),
           "link_to_show" => link_to_show+"\" #{(link_to_show[0] == '/' rescue true) ? '' : 'target="_blank"'} title=\"#{title}",
           "target" => target,
-          "img_src" => a.image.thumb.url || "/assets/announcement-default.jpg",
+          "img_src" => a.image.thumb.url || DefaultImgSrc,
           "img_description" => desc,
           "more" => t("announcement.more"),
           "view_count" => a.view_count
diff --git a/app/helpers/announcements_helper.rb b/app/helpers/announcements_helper.rb
index 41d0fe4..8e126ed 100644
--- a/app/helpers/announcements_helper.rb
+++ b/app/helpers/announcements_helper.rb
@@ -63,7 +63,7 @@ module AnnouncementsHelper
       "author" => author,
       "link_to_show" => link_to_show+"\" #{(link_to_show[0] == '/' rescue true) ? '' : 'target="_blank"'} title=\"#{title}",
       "target" => target,
-      "img_src" => image_url || "/assets/announcement-default.jpg",
+      "img_src" => image_url || AnnouncementsController::DefaultImgSrc,
       "img_description" => desc
     }
   end
@@ -114,7 +114,7 @@ module AnnouncementsHelper
           "source-site-link" => fa["source-site"],
           "link_to_show" => OrbitHelper.url_to_show(fa["params"]),
           "target" => "_self",
-          "img_src" => fa["image"]["thumb"] || "/assets/announcement-default.jpg",
+          "img_src" => fa["image"]["thumb"] || AnnouncementsController::DefaultImgSrc,
           "img_description" => fa["image_description_translations"][locale],
           "more" => t("announcement.more"),
           "view_count" => ""