diff --git a/vendor/built_in_modules/announcement/app/controllers/panel/announcement/back_end/bulletins_controller.rb b/vendor/built_in_modules/announcement/app/controllers/panel/announcement/back_end/bulletins_controller.rb
index a89b203b..f47b41bb 100644
--- a/vendor/built_in_modules/announcement/app/controllers/panel/announcement/back_end/bulletins_controller.rb
+++ b/vendor/built_in_modules/announcement/app/controllers/panel/announcement/back_end/bulletins_controller.rb
@@ -320,7 +320,7 @@ class Panel::Announcement::BackEnd::BulletinsController < OrbitBackendController
   protected
   
   def delete_out_invalid_date_from_params()
-    if(params[:bulletin]["deadline(1i)"].empty? or params[:bulletin]["deadline(2i)"].empty? or params[:bulletin]["deadline(3i)"].empty?) 
+    if(params[:bulletin]["deadline(1i)"].blank? or params[:bulletin]["deadline(2i)"].blank? or params[:bulletin]["deadline(3i)"].blank?) 
       params[:bulletin].delete("deadline(1i)")
       params[:bulletin].delete("deadline(2i)")
       params[:bulletin].delete("deadline(3i)")