diff --git a/app/helpers/admin/announcements_helper.rb b/app/helpers/admin/announcements_helper.rb
index 501697d..e0feaaa 100644
--- a/app/helpers/admin/announcements_helper.rb
+++ b/app/helpers/admin/announcements_helper.rb
@@ -87,9 +87,9 @@ module Admin::AnnouncementsHelper
         anns.text_translations = value
         value = {}
       when 16
-        links = val.split(";")
-        desc_en = row.cells[17].value.split(";")
-        desc_zh_tw = row.cells[18].value.split(";")
+        links = val.split(";") rescue []
+        desc_en = row.cells[17].value.split(";") rescue []
+        desc_zh_tw = row.cells[18].value.split(";") rescue []
         links.each_with_index do |link,i|
           bl = BulletinLink.new
           bl.url = link.strip
@@ -98,11 +98,11 @@ module Admin::AnnouncementsHelper
           bl.save
         end
       when 19
-        files = val.split(";")
-        desc_en = row.cells[20].value.split(";")
-        desc_zh_tw = row.cells[21].value.split(";")
-        alt_en = row.cells[22].value.split(";")
-        alt_zh_tw = row.cells[23].value.split(";")
+        files = val.split(";") rescue []
+        desc_en = row.cells[20].value.split(";") rescue []
+        desc_zh_tw = row.cells[21].value.split(";") rescue []
+        alt_en = row.cells[22].value.split(";") rescue []
+        alt_zh_tw = row.cells[23].value.split(";") rescue []
         files.each_with_index do |file, i|
           bf = BulletinFile.new
           bf.remote_file_url = file.strip rescue nil