diff --git a/module/VuFind/tests/Code/ISBNTest.php b/module/VuFind/tests/Code/ISBNTest.php
index 022734aca7aff2b28409557842a7e35175682727..c2a1e5ebeb86f8e5f0a1ee4efd5e9297f1433e2b 100644
--- a/module/VuFind/tests/Code/ISBNTest.php
+++ b/module/VuFind/tests/Code/ISBNTest.php
@@ -38,7 +38,7 @@ use VuFind\Code\ISBN;
  * @license  http://opensource.org/licenses/gpl-2.0.php GNU General Public License
  * @link     http://vufind.org/wiki/unit_tests Wiki
  */
-class ISBNTest extends \PHPUnit_Framework_TestCase
+class ISBNTest extends \VuFind\Tests\TestCase
 {
     /**
      * Test Valid ISBN-10.
diff --git a/module/VuFind/tests/Config/ReaderTest.php b/module/VuFind/tests/Config/ReaderTest.php
index 4b21767b32ec7baa2e4f50d911c1557ce06475b6..1f96542ef81c37c4977a1bbf73f92862baeb0d63 100644
--- a/module/VuFind/tests/Config/ReaderTest.php
+++ b/module/VuFind/tests/Config/ReaderTest.php
@@ -38,7 +38,7 @@ use VuFind\Config\Reader;
  * @license  http://opensource.org/licenses/gpl-2.0.php GNU General Public License
  * @link     http://vufind.org/wiki/unit_tests Wiki
  */
-class ReaderTest extends \PHPUnit_Framework_TestCase
+class ReaderTest extends \VuFind\Tests\TestCase
 {
     /**
      * Test basic config.ini loading.
diff --git a/module/VuFind/tests/Date/ConverterTest.php b/module/VuFind/tests/Date/ConverterTest.php
index 6da856f2fc2de14ec106c284fe561239f80d3e70..51c3f75f8b5ee93c0ef79e45d5f71bfb26d6bdea 100644
--- a/module/VuFind/tests/Date/ConverterTest.php
+++ b/module/VuFind/tests/Date/ConverterTest.php
@@ -38,7 +38,7 @@ use VuFind\Date\Converter, VuFind\Exception\Date as DateException,
  * @license  http://opensource.org/licenses/gpl-2.0.php GNU General Public License
  * @link     http://www.vufind.org  Main Page
  */
-class ConverterTest extends \PHPUnit_Framework_TestCase
+class ConverterTest extends \VuFind\Tests\TestCase
 {
     protected $savedDateFormat = null;
     protected $savedTimeFormat = null;
diff --git a/module/VuFind/tests/Solr/UtilsTest.php b/module/VuFind/tests/Solr/UtilsTest.php
index 49ca801f911b83a34fae8675558dddc1ab91e529..2dc0621aef96a67fff39d879b325fbebff6cfc69 100644
--- a/module/VuFind/tests/Solr/UtilsTest.php
+++ b/module/VuFind/tests/Solr/UtilsTest.php
@@ -37,7 +37,7 @@ use VuFind\Solr\Utils;
  * @license  http://opensource.org/licenses/gpl-2.0.php GNU General Public License
  * @link     http://vufind.org/wiki/unit_tests Wiki
  */
-class UtilsTest extends \PHPUnit_Framework_TestCase
+class UtilsTest extends \VuFind\Tests\TestCase
 {
     /**
      * Test capitalizeBooleans functionality.