diff --git a/src/PhpFunctionsScanner.php b/src/PhpFunctionsScanner.php
index e065a142..e29772b3 100644
--- a/src/PhpFunctionsScanner.php
+++ b/src/PhpFunctionsScanner.php
@@ -5,7 +5,7 @@
 use Gettext\Translations;
 use Gettext\Utils\PhpFunctionsScanner as GettextPhpFunctionsScanner;
 
-final class PhpFunctionsScanner extends GettextPhpFunctionsScanner {
+class PhpFunctionsScanner extends GettextPhpFunctionsScanner {
 	/**
 	 * {@inheritdoc}
 	 */