diff --git a/public_html/wp-content/plugins/wcpt/wcpt-event/class-event-application.php b/public_html/wp-content/plugins/wcpt/wcpt-event/class-event-application.php
index 7e5288c41..140b1a889 100644
--- a/public_html/wp-content/plugins/wcpt/wcpt-event/class-event-application.php
+++ b/public_html/wp-content/plugins/wcpt/wcpt-event/class-event-application.php
@@ -287,7 +287,7 @@ public function notify_applicant_application_received( $email_address, $event_ci
 
 		if ( 0 !== $application_post ) {
 			$message .= sprintf(
-				"URL: https://central.wordcamp.org/wp-admin/post.php?post=%3\$d&action=edit",
+				'URL: https://central.wordcamp.org/wp-admin/post.php?post=%3\$d&action=edit',
 				absint( $application_post )
 			);
 		}