diff --git a/tests/Framework/Ldap.php b/tests/Framework/Ldap.php
index 5034a83d780..b666955c33f 100644
--- a/tests/Framework/Ldap.php
+++ b/tests/Framework/Ldap.php
@@ -23,9 +23,9 @@ function test_class()
             $this->markTestSkipped('The ldap extension is not available.');
         }
 
-        StdErrMock::start();
+        StderrMock::start();
         $object = new rcube_ldap([]);
-        StdErrMock::stop();
+        StderrMock::stop();
 
         $this->assertInstanceOf('rcube_ldap', $object, "Class constructor");
         $this->assertSame('ERROR: Could not connect to any LDAP server', trim(StderrMock::$output));