diff --git a/src/TestSuite/Constraint/Console/ContentsBase.php b/src/TestSuite/Constraint/Console/ContentsBase.php
index 6c8c28562cb..4b4818604cd 100644
--- a/src/TestSuite/Constraint/Console/ContentsBase.php
+++ b/src/TestSuite/Constraint/Console/ContentsBase.php
@@ -13,12 +13,6 @@
  */
 namespace Cake\TestSuite\Constraint\Console;
 
-if (class_exists('PHPUnit_Runner_Version', false)
-    && !class_exists('PHPUnit\Framework\Constraint\Constraint', false)
-) {
-    class_alias('PHPUnit_Framework_Constraint', 'PHPUnit\Framework\Constraint\Constraint');
-}
-
 use PHPUnit\Framework\Constraint\Constraint;
 
 /**
diff --git a/src/TestSuite/Constraint/Console/ExitCode.php b/src/TestSuite/Constraint/Console/ExitCode.php
index 3a3579dab99..c7bcd927f7a 100644
--- a/src/TestSuite/Constraint/Console/ExitCode.php
+++ b/src/TestSuite/Constraint/Console/ExitCode.php
@@ -13,12 +13,6 @@
  */
 namespace Cake\TestSuite\Constraint\Console;
 
-if (class_exists('PHPUnit_Runner_Version', false)
-    && !class_exists('PHPUnit\Framework\Constraint\Constraint', false)
-) {
-    class_alias('PHPUnit_Framework_Constraint', 'PHPUnit\Framework\Constraint\Constraint');
-}
-
 use PHPUnit\Framework\Constraint\Constraint;
 
 /**
diff --git a/src/TestSuite/Constraint/EventFired.php b/src/TestSuite/Constraint/EventFired.php
index 8fc37216cfc..68658863d0b 100644
--- a/src/TestSuite/Constraint/EventFired.php
+++ b/src/TestSuite/Constraint/EventFired.php
@@ -1,17 +1,6 @@
 <?php
 namespace Cake\TestSuite\Constraint;
 
-if (class_exists('PHPUnit_Runner_Version', false)
-    && !class_exists('PHPUnit\Framework\Constraint\Constraint', false)
-) {
-    class_alias('PHPUnit_Framework_Constraint', 'PHPUnit\Framework\Constraint\Constraint');
-}
-if (class_exists('PHPUnit_Runner_Version', false)
-    && !class_exists('PHPUnit\Framework\AssertionFailedError', false)
-) {
-    class_alias('PHPUnit_Framework_AssertionFailedError', 'PHPUnit\Framework\AssertionFailedError');
-}
-
 use PHPUnit\Framework\AssertionFailedError;
 use PHPUnit\Framework\Constraint\Constraint;
 
diff --git a/src/TestSuite/Constraint/EventFiredWith.php b/src/TestSuite/Constraint/EventFiredWith.php
index 6c9dfa7b950..966325af0b8 100644
--- a/src/TestSuite/Constraint/EventFiredWith.php
+++ b/src/TestSuite/Constraint/EventFiredWith.php
@@ -1,17 +1,6 @@
 <?php
 namespace Cake\TestSuite\Constraint;
 
-if (class_exists('PHPUnit_Runner_Version', false)
-    && !class_exists('PHPUnit\Framework\Constraint\Constraint', false)
-) {
-    class_alias('PHPUnit_Framework_Constraint', 'PHPUnit\Framework\Constraint\Constraint');
-}
-if (class_exists('PHPUnit_Runner_Version', false)
-    && !class_exists('PHPUnit\Framework\AssertionFailedError', false)
-) {
-    class_alias('PHPUnit_Framework_AssertionFailedError', 'PHPUnit\Framework\AssertionFailedError');
-}
-
 use Cake\Event\Event;
 use PHPUnit\Framework\AssertionFailedError;
 use PHPUnit\Framework\Constraint\Constraint;
diff --git a/src/TestSuite/Constraint/Response/ResponseBase.php b/src/TestSuite/Constraint/Response/ResponseBase.php
index 1aa5f3806c4..e05bb3880e9 100644
--- a/src/TestSuite/Constraint/Response/ResponseBase.php
+++ b/src/TestSuite/Constraint/Response/ResponseBase.php
@@ -13,17 +13,6 @@
  */
 namespace Cake\TestSuite\Constraint\Response;
 
-if (class_exists('PHPUnit_Runner_Version', false)
-    && !class_exists('PHPUnit\Framework\Constraint\Constraint', false)
-) {
-    class_alias('PHPUnit_Framework_Constraint', 'PHPUnit\Framework\Constraint\Constraint');
-}
-if (class_exists('PHPUnit_Runner_Version', false)
-    && !class_exists('PHPUnit\Framework\AssertionFailedError', false)
-) {
-    class_alias('PHPUnit_Framework_AssertionFailedError', 'PHPUnit\Framework\AssertionFailedError');
-}
-
 use PHPUnit\Framework\AssertionFailedError;
 use PHPUnit\Framework\Constraint\Constraint;
 
diff --git a/src/TestSuite/Constraint/Session/SessionEquals.php b/src/TestSuite/Constraint/Session/SessionEquals.php
index 6bc05578227..4ed4840eb15 100644
--- a/src/TestSuite/Constraint/Session/SessionEquals.php
+++ b/src/TestSuite/Constraint/Session/SessionEquals.php
@@ -13,17 +13,6 @@
  */
 namespace Cake\TestSuite\Constraint\Session;
 
-if (class_exists('PHPUnit_Runner_Version', false)
-    && !class_exists('PHPUnit\Framework\Constraint\Constraint', false)
-) {
-    class_alias('PHPUnit_Framework_Constraint', 'PHPUnit\Framework\Constraint\Constraint');
-}
-if (class_exists('PHPUnit_Runner_Version', false)
-    && !class_exists('PHPUnit\Framework\AssertionFailedError', false)
-) {
-    class_alias('PHPUnit_Framework_AssertionFailedError', 'PHPUnit\Framework\AssertionFailedError');
-}
-
 use PHPUnit\Framework\AssertionFailedError;
 use PHPUnit\Framework\Constraint\Constraint;
 
diff --git a/src/TestSuite/Constraint/View/TemplateFileEquals.php b/src/TestSuite/Constraint/View/TemplateFileEquals.php
index 92f9308bf06..6cc48397bd6 100644
--- a/src/TestSuite/Constraint/View/TemplateFileEquals.php
+++ b/src/TestSuite/Constraint/View/TemplateFileEquals.php
@@ -13,12 +13,6 @@
  */
 namespace Cake\TestSuite\Constraint\View;
 
-if (class_exists('PHPUnit_Runner_Version', false)
-    && !class_exists('PHPUnit\Framework\Constraint\Constraint', false)
-) {
-    class_alias('PHPUnit_Framework_Constraint', 'PHPUnit\Framework\Constraint\Constraint');
-}
-
 use PHPUnit\Framework\Constraint\Constraint;
 
 /**
diff --git a/tests/phpunit_aliases.php b/tests/phpunit_aliases.php
index e613f3702be..644e5f21683 100644
--- a/tests/phpunit_aliases.php
+++ b/tests/phpunit_aliases.php
@@ -4,6 +4,7 @@
         trigger_error(sprintf('Your PHPUnit Version must be at least 5.7.0 to use CakePHP Testsuite, found %s', \PHPUnit_Runner_Version::id()), E_USER_ERROR);
     }
 
+    class_alias('PHPUnit_Framework_Constraint', 'PHPUnit\Framework\Constraint\Constraint');
     class_alias('PHPUnit_Framework_Test', 'PHPUnit\Framework\Test');
     class_alias('PHPUnit_Framework_AssertionFailedError', 'PHPUnit\Framework\AssertionFailedError');
     class_alias('PHPUnit_Framework_TestSuite', 'PHPUnit\Framework\TestSuite');