diff --git a/lib/tasks/e_paper_tasks.rake b/lib/tasks/e_paper_tasks.rake
index 533be7c..be80b6a 100644
--- a/lib/tasks/e_paper_tasks.rake
+++ b/lib/tasks/e_paper_tasks.rake
@@ -21,7 +21,7 @@ namespace :epaper do
 			emails += paper.other_emails_ids
 			emails.uniq!
 			emails_valid = emails.select do |email|
-				tmp = (email_format=~email)
+				tmp = (email_format=~email.to_s)
 				tmp==0 ? true : false
 			end
 			emails_invalid = emails - emails_valid