diff --git a/tests/system/HTTP/SiteURIFactoryDetectRoutePathTest.php b/tests/system/HTTP/SiteURIFactoryDetectRoutePathTest.php
index b9b764f4d1a9..3b7715049a5c 100644
--- a/tests/system/HTTP/SiteURIFactoryDetectRoutePathTest.php
+++ b/tests/system/HTTP/SiteURIFactoryDetectRoutePathTest.php
@@ -23,6 +23,13 @@
  */
 final class SiteURIFactoryDetectRoutePathTest extends CIUnitTestCase
 {
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $_GET = $_SERVER = [];
+    }
+
     private function createSiteURIFactory(array $server, ?App $appConfig = null): SiteURIFactory
     {
         $appConfig ??= new App();
@@ -32,8 +39,6 @@ private function createSiteURIFactory(array $server, ?App $appConfig = null): Si
 
     public function testDefault()
     {
-        $_GET = $_SERVER = [];
-
         // /index.php/woot?code=good#pos
         $_SERVER['REQUEST_URI'] = '/index.php/woot';
         $_SERVER['SCRIPT_NAME'] = '/index.php';
@@ -46,8 +51,6 @@ public function testDefault()
 
     public function testDefaultEmpty()
     {
-        $_GET = $_SERVER = [];
-
         // /
         $_SERVER['REQUEST_URI'] = '/';
         $_SERVER['SCRIPT_NAME'] = '/index.php';
@@ -60,8 +63,6 @@ public function testDefaultEmpty()
 
     public function testRequestURI()
     {
-        $_GET = $_SERVER = [];
-
         // /index.php/woot?code=good#pos
         $_SERVER['REQUEST_URI'] = '/index.php/woot';
         $_SERVER['SCRIPT_NAME'] = '/index.php';
@@ -74,8 +75,6 @@ public function testRequestURI()
 
     public function testRequestURINested()
     {
-        $_GET = $_SERVER = [];
-
         // I'm not sure but this is a case of Apache config making such SERVER
         // values?
         // The current implementation doesn't use the value of the URI object.
@@ -96,8 +95,6 @@ public function testRequestURINested()
 
     public function testRequestURISubfolder()
     {
-        $_GET = $_SERVER = [];
-
         // /ci/index.php/popcorn/woot?code=good#pos
         $_SERVER['REQUEST_URI'] = '/ci/index.php/popcorn/woot';
         $_SERVER['SCRIPT_NAME'] = '/ci/index.php';
@@ -110,8 +107,6 @@ public function testRequestURISubfolder()
 
     public function testRequestURINoIndex()
     {
-        $_GET = $_SERVER = [];
-
         // /sub/example
         $_SERVER['REQUEST_URI'] = '/sub/example';
         $_SERVER['SCRIPT_NAME'] = '/sub/index.php';
@@ -124,8 +119,6 @@ public function testRequestURINoIndex()
 
     public function testRequestURINginx()
     {
-        $_GET = $_SERVER = [];
-
         // /ci/index.php/woot?code=good#pos
         $_SERVER['REQUEST_URI'] = '/index.php/woot?code=good';
         $_SERVER['SCRIPT_NAME'] = '/index.php';
@@ -138,8 +131,6 @@ public function testRequestURINginx()
 
     public function testRequestURINginxRedirecting()
     {
-        $_GET = $_SERVER = [];
-
         // /?/ci/index.php/woot
         $_SERVER['REQUEST_URI'] = '/?/ci/woot';
         $_SERVER['SCRIPT_NAME'] = '/index.php';
@@ -152,8 +143,6 @@ public function testRequestURINginxRedirecting()
 
     public function testRequestURISuppressed()
     {
-        $_GET = $_SERVER = [];
-
         // /woot?code=good#pos
         $_SERVER['REQUEST_URI'] = '/woot';
         $_SERVER['SCRIPT_NAME'] = '/';
@@ -166,8 +155,6 @@ public function testRequestURISuppressed()
 
     public function testQueryString()
     {
-        $_GET = $_SERVER = [];
-
         // /index.php?/ci/woot
         $_SERVER['REQUEST_URI']  = '/index.php?/ci/woot';
         $_SERVER['QUERY_STRING'] = '/ci/woot';
@@ -183,8 +170,6 @@ public function testQueryString()
 
     public function testQueryStringWithQueryString()
     {
-        $_GET = $_SERVER = [];
-
         // /index.php?/ci/woot?code=good#pos
         $_SERVER['REQUEST_URI']  = '/index.php?/ci/woot?code=good';
         $_SERVER['QUERY_STRING'] = '/ci/woot?code=good';
@@ -202,8 +187,6 @@ public function testQueryStringWithQueryString()
 
     public function testQueryStringEmpty()
     {
-        $_GET = $_SERVER = [];
-
         // /index.php?
         $_SERVER['REQUEST_URI'] = '/index.php?';
         $_SERVER['SCRIPT_NAME'] = '/index.php';
@@ -216,8 +199,6 @@ public function testQueryStringEmpty()
 
     public function testPathInfoUnset()
     {
-        $_GET = $_SERVER = [];
-
         // /index.php/woot?code=good#pos
         $_SERVER['REQUEST_URI'] = '/index.php/woot';
         $_SERVER['SCRIPT_NAME'] = '/index.php';
@@ -230,8 +211,6 @@ public function testPathInfoUnset()
 
     public function testPathInfoSubfolder()
     {
-        $_GET = $_SERVER = [];
-
         $appConfig          = new App();
         $appConfig->baseURL = 'http://localhost:8888/ci431/public/';