diff --git a/mod/dfrn_poll.php b/mod/dfrn_poll.php
index 20fdc8f79c..a8c27efc17 100644
--- a/mod/dfrn_poll.php
+++ b/mod/dfrn_poll.php
@@ -353,6 +353,8 @@ function dfrn_poll_content(&$a) {
 		}
 		else {
 			$status = 1;
+			$challenge = '';
+			$encrypted_id = '';
 		}
 
 		if(($type === 'profile') && (strlen($sec))) {