diff --git a/_test/tests/inc/input.test.php b/_test/tests/inc/input.test.php
index bedfcfdba12d7c49cbacffc3a8c84f067e6ece7a..cec0b80f6fa417cbe6e3918479a1d62c0251994a 100644
--- a/_test/tests/inc/input.test.php
+++ b/_test/tests/inc/input.test.php
@@ -225,6 +225,7 @@ class input_test extends DokuWikiTest {
         $this->assertSame('bang', $INPUT->valid('nope', $valids, 'bang'));
         $this->assertSame(17, $INPUT->valid('int', $valids));
         $this->assertSame('foo', $INPUT->valid('string', $valids));
+        $this->assertSame(null, $INPUT->valid('array', $valids));
 
         $valids = array(true);
         $this->assertSame(true, $INPUT->valid('string', $valids));