diff --git a/classes/mail/Mail.inc.php b/classes/mail/Mail.inc.php
index 626d1b39c17..c1dd420108f 100644
--- a/classes/mail/Mail.inc.php
+++ b/classes/mail/Mail.inc.php
@@ -450,7 +450,7 @@ function getBccString() {
 	 * @return boolean
 	 */
 	function send() {
-		if (HookRegistry::call('Mail::send', array($this))) return;
+		if (HookRegistry::call('Mail::send', array($this))) return true;
 
 		// Replace all the private parameters for this message.
 		$mailBody = $this->getBody();