diff --git a/app/code/core/Mage/Adminhtml/Model/Customer/Observer.php b/app/code/core/Mage/Adminhtml/Model/Customer/Observer.php
index fef05b8b..b4ddb141 100644
--- a/app/code/core/Mage/Adminhtml/Model/Customer/Observer.php
+++ b/app/code/core/Mage/Adminhtml/Model/Customer/Observer.php
@@ -72,7 +72,7 @@ public function attributeEditPrepareForm($observer)
             'min' => 1,
         ], 'frontend_input');
 
-        if ($attribute->getAttributeCode()) {
+        if ($attribute->getAttributeCode() === 'street') {
             $form->getElement('multiline_count')->setMax(4);
         }