diff --git a/core/action.class.inc.php b/core/action.class.inc.php
index 5bb64979b..16754df99 100644
--- a/core/action.class.inc.php
+++ b/core/action.class.inc.php
@@ -179,7 +179,7 @@ class ActionEmail extends ActionNotification
 	protected function FindRecipients($sRecipAttCode, $aArgs)
 	{
 		$sOQL = $this->Get($sRecipAttCode);
-		if (strlen($sOQL) == '') return '';
+		if (strlen($sOQL) === 0) return '';
 
 		try
 		{