diff --git a/tests/wpunit/SanityTest.php b/tests/wpunit/SanityTest.php
index 0c80d70..3c2abb8 100644
--- a/tests/wpunit/SanityTest.php
+++ b/tests/wpunit/SanityTest.php
@@ -72,7 +72,7 @@ public function testCanUsePolylang()
         asort($langs);
 
         error_log('################jjA;');
-        error_log($langs, true);
+        error_log(var_export($langs), true);
         error_log('################jjA;');
         $this->assertEquals($langs, ['de', 'en', 'es', 'fi', 'fr']);
     }