diff --git a/plugins/LanguagesManager/Test/Unit/TranslationWriter/Validate/CoreTranslationsTest.php b/plugins/LanguagesManager/Test/Unit/TranslationWriter/Validate/CoreTranslationsTest.php
index 2a82991fcdbfcb537e40e4c3dc0f6845450d25b6..cd0ed02093055cb02263edc8ef34d223bd20e611 100644
--- a/plugins/LanguagesManager/Test/Unit/TranslationWriter/Validate/CoreTranslationsTest.php
+++ b/plugins/LanguagesManager/Test/Unit/TranslationWriter/Validate/CoreTranslationsTest.php
@@ -15,12 +15,6 @@ use Piwik\Plugins\LanguagesManager\TranslationWriter\Validate\CoreTranslations;
  */
 class CoreTranslationsTest extends \PHPUnit_Framework_TestCase
 {
-    public function setUp()
-    {
-        include PIWIK_INCLUDE_PATH . '/core/DataFiles/Languages.php';
-        include PIWIK_INCLUDE_PATH . '/core/DataFiles/Countries.php';
-    }
-
     public function getFilterTestDataValid()
     {
         return array(
diff --git a/plugins/LanguagesManager/Test/Unit/TranslationWriter/WriterTest.php b/plugins/LanguagesManager/Test/Unit/TranslationWriter/WriterTest.php
index 41b754f55b9d904f0d793cf9d183cc16ea293f6c..6f8baa28a9e66fa1550cce4dbb93acaccd448c5e 100644
--- a/plugins/LanguagesManager/Test/Unit/TranslationWriter/WriterTest.php
+++ b/plugins/LanguagesManager/Test/Unit/TranslationWriter/WriterTest.php
@@ -21,13 +21,6 @@ use Piwik\Plugins\LanguagesManager\TranslationWriter\Writer;
  */
 class WriterTest extends \PHPUnit_Framework_TestCase
 {
-    public function setUp()
-    {
-        parent::setUp();
-        include PIWIK_INCLUDE_PATH . '/core/DataFiles/Languages.php';
-        include PIWIK_INCLUDE_PATH . '/core/DataFiles/Countries.php';
-    }
-
     /**
      * @group Core
      *
diff --git a/tests/PHPUnit/Framework/Fixture.php b/tests/PHPUnit/Framework/Fixture.php
index 751c4ce1abda7eb3f00edb114d4051d5ec7b6721..342e47527f3370739f34f7d307de7e24cca6b005 100644
--- a/tests/PHPUnit/Framework/Fixture.php
+++ b/tests/PHPUnit/Framework/Fixture.php
@@ -189,10 +189,7 @@ class Fixture extends \PHPUnit_Framework_Assert
 
         include "DataFiles/SearchEngines.php";
         include "DataFiles/Socials.php";
-        include "DataFiles/Languages.php";
-        include "DataFiles/Countries.php";
         include "DataFiles/Currencies.php";
-        include "DataFiles/LanguageToCountry.php";
         include "DataFiles/Providers.php";
 
         if (!$this->isFixtureSetUp()) {
diff --git a/tests/PHPUnit/Unit/CommonTest.php b/tests/PHPUnit/Unit/CommonTest.php
index 26341502df1789d03486311872a3bb7ee500f365..503ce0dc12ce48a675eea1459edf54ba15ed0e4a 100644
--- a/tests/PHPUnit/Unit/CommonTest.php
+++ b/tests/PHPUnit/Unit/CommonTest.php
@@ -359,8 +359,6 @@ class CommonTest extends PHPUnit_Framework_TestCase
      */
     public function testExtractCountryCodeFromBrowserLanguage($browserLanguage, $validCountries, $expected)
     {
-        include 'DataFiles/LanguageToCountry.php';
-
         $this->assertEquals($expected, Common::extractCountryCodeFromBrowserLanguage($browserLanguage, $validCountries, true));
         $this->assertEquals($expected, Common::extractCountryCodeFromBrowserLanguage($browserLanguage, $validCountries, false));
     }
@@ -385,8 +383,6 @@ class CommonTest extends PHPUnit_Framework_TestCase
      */
     public function testExtractCountryCodeFromBrowserLanguageInfer($browserLanguage, $validCountries, $expected, $expectedInfer)
     {
-        include "DataFiles/LanguageToCountry.php";
-
         // do not infer country from language
         $this->assertEquals($expected, Common::extractCountryCodeFromBrowserLanguage($browserLanguage, $validCountries, $enableLanguageToCountryGuess = false));
 
diff --git a/tests/PHPUnit/Unit/UrlHelperTest.php b/tests/PHPUnit/Unit/UrlHelperTest.php
index 6537936bfcc1d83ee8b469fc780917999cdcef23..189b026828bdd0f57f2cdc6747e843c490979a16 100644
--- a/tests/PHPUnit/Unit/UrlHelperTest.php
+++ b/tests/PHPUnit/Unit/UrlHelperTest.php
@@ -193,7 +193,6 @@ class UrlHelperTest extends \PHPUnit_Framework_TestCase
     private function includeDataFilesForSearchEngineTest()
     {
         include "DataFiles/SearchEngines.php";
-        include "DataFiles/Countries.php";
     }
 
     /**