diff --git a/core/modules/system/lib/Drupal/system/Tests/Common/TableSortExtenderUnitTest.php b/core/modules/system/lib/Drupal/system/Tests/Common/TableSortExtenderUnitTest.php
index e42c4c6..241949f 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Common/TableSortExtenderUnitTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Common/TableSortExtenderUnitTest.php
@@ -70,8 +70,7 @@ function testTableSortInit() {
     // Test with simple table headers plus $_GET parameters that should _not_
     // override the default.
     $request = Request::createFromGlobals();
-    $request->query->replace(array());
-    $request->query->add(array(
+    $request->query->replace(array(
       // This should not override the table order because only complex
       // headers are overridable.
       'order' => 'bar',
@@ -84,8 +83,7 @@ function testTableSortInit() {
     // Test with simple table headers plus $_GET parameters that _should_
     // override the default.
     $request = Request::createFromGlobals();
-    $request->query->replace(array());
-    $request->query->add(array(
+    $request->query->replace(array(
       'sort' => 'DESC',
       // Add an unrelated parameter to ensure that tablesort will include
       // it in the links that it creates.
@@ -116,8 +114,7 @@ function testTableSortInit() {
     );
     // Reset $_GET from previous assertion.
     $request = Request::createFromGlobals();
-    $request->query->replace(array());
-    $request->query->add(array(
+    $request->query->replace(array(
       'order' => '2',
     ));
     \Drupal::getContainer()->set('request', $request);
@@ -134,8 +131,7 @@ function testTableSortInit() {
     // Test complex table headers plus $_GET parameters that should _not_
     // override the default.
     $request = Request::createFromGlobals();
-    $request->query->replace(array());
-    $request->query->add(array(
+    $request->query->replace(array(
       // This should not override the table order because this header does not
       // exist.
       'order' => 'bar',
@@ -154,8 +150,7 @@ function testTableSortInit() {
     // Test complex table headers plus $_GET parameters that _should_
     // override the default.
     $request = Request::createFromGlobals();
-    $request->query->replace(array());
-    $request->query->add(array(
+    $request->query->replace(array(
       'order' => '1',
       'sort' => 'ASC',
       // Add an unrelated parameter to ensure that tablesort will include
diff --git a/core/modules/system/lib/Drupal/system/Tests/Database/SelectPagerDefaultTest.php b/core/modules/system/lib/Drupal/system/Tests/Database/SelectPagerDefaultTest.php
index bbd253a..79c93d2 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Database/SelectPagerDefaultTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Database/SelectPagerDefaultTest.php
@@ -138,8 +138,7 @@ function testHavingPagerQuery() {
   function testElementNumbers() {
 
     $request = Request::createFromGlobals();
-    $request->query->replace(array());
-    $request->query->add(array(
+    $request->query->replace(array(
       'page' => '3, 2, 1, 0',
     ));
     \Drupal::getContainer()->set('request', $request);
diff --git a/core/modules/system/lib/Drupal/system/Tests/Entity/EntityQueryTest.php b/core/modules/system/lib/Drupal/system/Tests/Entity/EntityQueryTest.php
index 771d5d8..9256faa 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Entity/EntityQueryTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Entity/EntityQueryTest.php
@@ -349,8 +349,7 @@ function testSort() {
     // Test the pager by setting element #1 to page 2 with a page size of 4.
     // Results will be #8-12 from above.
     $request = Request::createFromGlobals();
-    $request->query->replace(array());
-    $request->query->add(array(
+    $request->query->replace(array(
       'page' => '0,2',
     ));
     \Drupal::getContainer()->set('request', $request);
@@ -381,8 +380,7 @@ protected function testTableSort() {
     // assert that all entities from one bundle are after the other as the
     // order dictates.
     $request = Request::createFromGlobals();
-    $request->query->replace(array());
-    $request->query->add(array(
+    $request->query->replace(array(
       'sort' => 'asc',
       'order' => 'Type',
     ));