diff --git a/translations/translationtool/src/translationtool.php b/translations/translationtool/src/translationtool.php
index d6a74bb..4aeca53 100644
--- a/translations/translationtool/src/translationtool.php
+++ b/translations/translationtool/src/translationtool.php
@@ -206,7 +206,7 @@ private function escape(string $string): string {
 		return Gettext\Generators\Po::convertString($string);
 	}
 
-	private function hasExtension(string $fileName, string $extensions): bool {
+	private function hasExtension(string $fileName, array $extensions): bool {
 		foreach ($extensions as $ext) {
 			if (substr($fileName, -strlen($ext)) === $ext) {
 				return true;
diff --git a/translations/translationtool/translationtool.phar b/translations/translationtool/translationtool.phar
index 8fd3500..20619b6 100755
Binary files a/translations/translationtool/translationtool.phar and b/translations/translationtool/translationtool.phar differ