diff --git a/src/PhpSpreadsheet/Reader/Security/XmlScanner.php b/src/PhpSpreadsheet/Reader/Security/XmlScanner.php
index 889a06f1..3c8c4209 100644
--- a/src/PhpSpreadsheet/Reader/Security/XmlScanner.php
+++ b/src/PhpSpreadsheet/Reader/Security/XmlScanner.php
@@ -18,7 +18,7 @@ class XmlScanner
     public function __construct($pattern = '<!DOCTYPE')
     {
         $this->pattern = $pattern;
-        $this->libxmlDisableEntityLoader = $this->IdentifyLibxmlDisableEntityLoaderAvailability();
+        $this->libxmlDisableEntityLoader = $this->identifyLibxmlDisableEntityLoaderAvailability();
 
         if ($this->libxmlDisableEntityLoader) {
             libxml_disable_entity_loader(false);