diff --git a/src/Symfony/Component/Config/Util/XmlUtils.php b/src/Symfony/Component/Config/Util/XmlUtils.php
index 494d7c3895..e7c0bf79d4 100644
--- a/src/Symfony/Component/Config/Util/XmlUtils.php
+++ b/src/Symfony/Component/Config/Util/XmlUtils.php
@@ -132,7 +132,7 @@ class XmlUtils
         $nodeValue = false;
         foreach ($element->childNodes as $node) {
             if ($node instanceof \DOMText) {
-                if (strlen(trim($node->nodeValue)) > 0) {
+                if ('' !== trim($node->nodeValue)) {
                     $nodeValue = trim($node->nodeValue);
                     $empty = false;
                 }