diff --git a/test/libraries/PMA_user_preferences_test.php b/test/libraries/PMA_user_preferences_test.php
index 359f7b31db..103ef14859 100644
--- a/test/libraries/PMA_user_preferences_test.php
+++ b/test/libraries/PMA_user_preferences_test.php
@@ -92,7 +92,8 @@ class PMA_User_Preferences_Test extends PHPUnit_Framework_TestCase
         $this->assertEquals(
             time(),
             $result['mtime'],
-            10
+            '',
+            2
         );
 
         $this->assertEquals(
@@ -170,7 +171,8 @@ class PMA_User_Preferences_Test extends PHPUnit_Framework_TestCase
         $this->assertEquals(
             time(),
             $_SESSION['userconfig']['ts'],
-            10
+            '',
+            2
         );
 
         $assert = true;