diff --git a/src/Core/Dom/DomXpath.php b/src/Core/Dom/DomXpath.php
index 2e06a5b..34869c6 100644
--- a/src/Core/Dom/DomXpath.php
+++ b/src/Core/Dom/DomXpath.php
@@ -34,7 +34,7 @@ public function query($expr, BaseDomNode $context = null, $registerNodeNS = null
 
         // NullDomNode is an addition to SERPS and must be handled differently
         if ($context instanceof NullDomNode) {
-            if ($expr{0} == '/') {
+            if ($expr[0] == '/') {
                 $context = null;
             } else {
                 return new EmptyDomNodeList();
diff --git a/src/Core/Url/UrlArchiveTrait.php b/src/Core/Url/UrlArchiveTrait.php
index 4d7ef7b..21064ef 100644
--- a/src/Core/Url/UrlArchiveTrait.php
+++ b/src/Core/Url/UrlArchiveTrait.php
@@ -383,7 +383,7 @@ private function resolveAsAlterableUrl($url, $as)
                     if (empty($delta->getParams())) {
                         $delta->setParams($this->getParams());
                     }
-                } elseif ('/' !== $path{0}) {
+                } elseif ('/' !== $path[0]) {
                     $path = $this->getPath();
                     if (strpos($path, '/') !== false) {
                         $path = substr($path, 0, strrpos($path, '/'));