diff --git a/application/Espo/Modules/Crm/Business/Event/Invitations.php b/application/Espo/Modules/Crm/Business/Event/Invitations.php
index 5df6823797..ee042db6c5 100644
--- a/application/Espo/Modules/Crm/Business/Event/Invitations.php
+++ b/application/Espo/Modules/Crm/Business/Event/Invitations.php
@@ -79,6 +79,8 @@ class Invitations
 		$bodyTpl = file_get_contents($bodyTplFileName);
 
 		$subject = $this->parseInvitationTemplate($subjectTpl, $entity, $invitee, $uid);
+		$subject = str_replace(array("\n", "\r"), '', $subject);
+		
 		$body = $this->parseInvitationTemplate($bodyTpl, $entity, $invitee, $uid);
 
 		$email->set('subject', $subject);