diff --git a/phpBB/phpbb/language/language.php b/phpBB/phpbb/language/language.php
index 51e6d0b185..cb21d50ea3 100644
--- a/phpBB/phpbb/language/language.php
+++ b/phpBB/phpbb/language/language.php
@@ -292,9 +292,10 @@ class language
 	 *
 	 * @return string
 	 */
-	public function lang_array($key, $args = array())
+	public function lang_array($key, $args = [])
 	{
 		$lang = $this->lang_raw($key);
+		$args = (array) $args;
 
 		if ($lang === $key)
 		{