diff --git a/src/BeSimple/SoapClient/WsdlDownloader.php b/src/BeSimple/SoapClient/WsdlDownloader.php
index 97a7d67b..eab69e1c 100644
--- a/src/BeSimple/SoapClient/WsdlDownloader.php
+++ b/src/BeSimple/SoapClient/WsdlDownloader.php
@@ -214,7 +214,7 @@ private function resolveRelativePathInUrl($base, $relative)
         $urlParts = parse_url($base);
 
         // combine base path with relative path
-        if (isset($urlParts['path']) && '/' === $relative{0}) {
+        if (isset($urlParts['path']) && '/' === $relative[0]) {
             // $relative is absolute path from domain (starts with /)
             $path = $relative;
         } elseif (isset($urlParts['path']) && strrpos($urlParts['path'], '/') === (strlen($urlParts['path']) )) {