diff --git a/app/code/core/Mage/Usa/Model/Shipping/Carrier/Dhl/International.php b/app/code/core/Mage/Usa/Model/Shipping/Carrier/Dhl/International.php
index 72f3a25c8c2..226c014a721 100644
--- a/app/code/core/Mage/Usa/Model/Shipping/Carrier/Dhl/International.php
+++ b/app/code/core/Mage/Usa/Model/Shipping/Carrier/Dhl/International.php
@@ -768,9 +768,9 @@ protected function _addDimension($nodePiece)
     {
         $sizeChecker = (string)$this->getConfigData('size');
 
-        $height = $this->_getDimension((string)$this->getConfigData('height'));
-        $depth = $this->_getDimension((string)$this->getConfigData('depth'));
-        $width = $this->_getDimension((string)$this->getConfigData('width'));
+        $height = $this->_getDimension((float)$this->getConfigData('height'));
+        $depth = $this->_getDimension((float)$this->getConfigData('depth'));
+        $width = $this->_getDimension((float)$this->getConfigData('width'));
 
         if ($sizeChecker && $height && $depth && $width) {
             $nodePiece->addChild('Height', $height);