existence check

diff --git a/framework/ActiveSync/lib/Horde/ActiveSync/Request/Ping.php b/framework/ActiveSync/lib/Horde/ActiveSync/Request/Ping.php
index 4d87100..dc92565 100644 (file)
--- a/framework/ActiveSync/lib/Horde/ActiveSync/Request/Ping.php
+++ b/framework/ActiveSync/lib/Horde/ActiveSync/Request/Ping.php
@@ -40,7 +40,7 @@ class Horde_ActiveSync_Request_Ping extends Horde_ActiveSync_Request_Base
 
     protected function _checkHeartbeat($lifetime)
     {
-        if ($this->_ping_settings['forcedheartbeat']) {
+        if (!empty($this->_ping_settings['forcedheartbeat'])) {
             return $this->_ping_settings['forcedheartbeat'];
         }
         if ($lifetime !== 0 && $lifetime < $this->_ping_settings['heartbeatmin']) {