diff --git a/tests/Core/Config/ReportWidthTest.php b/tests/Core/Config/ReportWidthTest.php
index d10e7a07d9..d5e4ff58d5 100644
--- a/tests/Core/Config/ReportWidthTest.php
+++ b/tests/Core/Config/ReportWidthTest.php
@@ -29,7 +29,7 @@ final class ReportWidthTest extends TestCase
      *
      * @return void
      */
-    public static function cleanConfig()
+    protected function cleanConfig()
     {
         // Set to the property's default value to clear out potentially set values from other tests.
         self::setStaticProperty('executablePaths', []);
@@ -52,7 +52,7 @@ public static function cleanConfig()
      *
      * @return void
      */
-    public function resetConfig()
+    protected function resetConfig()
     {
         $_SERVER['argv'] = [];
 
diff --git a/tests/Core/Ruleset/ExpandRulesetReferenceHomePathTest.php b/tests/Core/Ruleset/ExpandRulesetReferenceHomePathTest.php
index c16da4315c..10a4dd9813 100644
--- a/tests/Core/Ruleset/ExpandRulesetReferenceHomePathTest.php
+++ b/tests/Core/Ruleset/ExpandRulesetReferenceHomePathTest.php
@@ -36,9 +36,9 @@ final class ExpandRulesetReferenceHomePathTest extends AbstractRulesetTestCase
      *
      * @return void
      */
-    protected function storeHomePath()
+    public static function storeHomePath()
     {
-        $this->homepath = getenv('HOME');
+        self::$homepath = getenv('HOME');
 
     }//end storeHomePath()
 
@@ -50,10 +50,10 @@ protected function storeHomePath()
      *
      * @return void
      */
-    protected function restoreHomePath()
+    public static function restoreHomePath()
     {
-        if (is_string($this->homepath) === true) {
-            putenv('HOME='.$this->homepath);
+        if (is_string(self::$homepath) === true) {
+            putenv('HOME='.self::$homepath);
         } else {
             // Remove the environment variable as it didn't exist before.
             putenv('HOME');
diff --git a/tests/Core/Ruleset/RuleInclusionAbsoluteLinuxTest.php b/tests/Core/Ruleset/RuleInclusionAbsoluteLinuxTest.php
index 1955ce2a43..6eb0d1a208 100644
--- a/tests/Core/Ruleset/RuleInclusionAbsoluteLinuxTest.php
+++ b/tests/Core/Ruleset/RuleInclusionAbsoluteLinuxTest.php
@@ -50,7 +50,7 @@ final class RuleInclusionAbsoluteLinuxTest extends TestCase
      *
      * @return void
      */
-    public function initializeConfigAndRuleset()
+    protected function initializeConfigAndRuleset()
     {
         $this->standard = __DIR__.'/'.basename(__FILE__, '.php').'.xml';
         $repoRootDir    = dirname(dirname(dirname(__DIR__)));
@@ -84,7 +84,7 @@ public function initializeConfigAndRuleset()
      *
      * @return void
      */
-    public function resetRuleset()
+    protected function resetRuleset()
     {
         file_put_contents($this->standard, $this->contents);
 
diff --git a/tests/Core/Ruleset/RuleInclusionAbsoluteWindowsTest.php b/tests/Core/Ruleset/RuleInclusionAbsoluteWindowsTest.php
index 9dd0370b28..fc5d654885 100644
--- a/tests/Core/Ruleset/RuleInclusionAbsoluteWindowsTest.php
+++ b/tests/Core/Ruleset/RuleInclusionAbsoluteWindowsTest.php
@@ -52,7 +52,7 @@ final class RuleInclusionAbsoluteWindowsTest extends TestCase
      *
      * @return void
      */
-    public function initializeConfigAndRuleset()
+    protected function initializeConfigAndRuleset()
     {
         $this->standard = __DIR__.'/'.basename(__FILE__, '.php').'.xml';
         $repoRootDir    = dirname(dirname(dirname(__DIR__)));
@@ -81,7 +81,7 @@ public function initializeConfigAndRuleset()
      *
      * @return void
      */
-    public function resetRuleset()
+    protected function resetRuleset()
     {
         file_put_contents($this->standard, $this->contents);
 
diff --git a/tests/Core/Ruleset/RuleInclusionTest.php b/tests/Core/Ruleset/RuleInclusionTest.php
index f6d7b5478d..d91a6c2590 100644
--- a/tests/Core/Ruleset/RuleInclusionTest.php
+++ b/tests/Core/Ruleset/RuleInclusionTest.php
@@ -50,7 +50,7 @@ final class RuleInclusionTest extends AbstractRulesetTestCase
      *
      * @return void
      */
-    public static function initializeConfigAndRuleset()
+    protected function initializeConfigAndRuleset()
     {
         if (self::$standard === '') {
             $standard       = __DIR__.'/'.basename(__FILE__, '.php').'.xml';