diff --git a/app/code/core/Mage/Sendfriend/Model/Sendfriend.php b/app/code/core/Mage/Sendfriend/Model/Sendfriend.php
index b7614c9b0cc..654e512a235 100644
--- a/app/code/core/Mage/Sendfriend/Model/Sendfriend.php
+++ b/app/code/core/Mage/Sendfriend/Model/Sendfriend.php
@@ -187,7 +187,7 @@ public function validate()
         }
 
         $email = $this->getSender()->getEmail();
-        if (empty($email) or !Zend_Validate::is($email, 'EmailAddress')) {
+        if (empty($email) || !Zend_Validate::is($email, 'EmailAddress')) {
             $errors[] = Mage::helper('sendfriend')->__('Invalid sender email.');
         }