diff --git a/CHANGELOG.md b/CHANGELOG.md
index ff5f049bc..af09e9e09 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@
 * Mock methods with static return types #1157
 * Mock methods with mixed return type #1156
 * Mock classes with new in initializers on PHP 8.1 #1160
+* Removes redundant PHPUnitConstraint #1158
 
 ## 1.4.4 (2021-09-13)
 
diff --git a/library/Mockery/Matcher/PHPUnitConstraint.php b/library/Mockery/Matcher/PHPUnitConstraint.php
deleted file mode 100644
index 11874878e..000000000
--- a/library/Mockery/Matcher/PHPUnitConstraint.php
+++ /dev/null
@@ -1,76 +0,0 @@
-<?php
-/**
- * Mockery
- *
- * LICENSE
- *
- * This source file is subject to the new BSD license that is bundled
- * with this package in the file LICENSE.txt.
- * It is also available through the world-wide-web at this URL:
- * http://github.com/padraic/mockery/blob/master/LICENSE
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to padraic@php.net so we can send you a copy immediately.
- *
- * @category   Mockery
- * @package    Mockery
- * @copyright  Copyright (c) 2010 Pádraic Brady (http://blog.astrumfutura.com)
- * @license    http://github.com/padraic/mockery/blob/master/LICENSE New BSD License
- */
-
-namespace Mockery\Matcher;
-
-use Mockery\Exception\InvalidArgumentException;
-
-class PHPUnitConstraint extends MatcherAbstract
-{
-    protected $constraint;
-    protected $rethrow;
-
-    /**
-     * @param mixed $constraint
-     * @param bool $rethrow
-     */
-    public function __construct($constraint, $rethrow = false)
-    {
-        if (!($constraint instanceof \PHPUnit_Framework_Constraint)
-        && !($constraint instanceof \PHPUnit\Framework\Constraint)) {
-            throw new InvalidArgumentException(
-                'Constraint must be one of \PHPUnit\Framework\Constraint or ' .
-                '\PHPUnit_Framework_Constraint'
-            );
-        }
-        $this->constraint = $constraint;
-        $this->rethrow = $rethrow;
-    }
-
-    /**
-     * @param mixed $actual
-     * @return bool
-     */
-    public function match(&$actual)
-    {
-        try {
-            $this->constraint->evaluate($actual);
-            return true;
-        } catch (\PHPUnit_Framework_AssertionFailedError $e) {
-            if ($this->rethrow) {
-                throw $e;
-            }
-            return false;
-        } catch (\PHPUnit\Framework\AssertionFailedError $e) {
-            if ($this->rethrow) {
-                throw $e;
-            }
-            return false;
-        }
-    }
-
-    /**
-     *
-     */
-    public function __toString()
-    {
-        return '<Constraint>';
-    }
-}
diff --git a/tests/Mockery/Matcher/PHPUnitConstraintTest.php b/tests/Mockery/Matcher/PHPUnitConstraintTest.php
deleted file mode 100644
index e66d01a1c..000000000
--- a/tests/Mockery/Matcher/PHPUnitConstraintTest.php
+++ /dev/null
@@ -1,95 +0,0 @@
-<?php
-/**
- * Mockery
- *
- * LICENSE
- *
- * This source file is subject to the new BSD license that is bundled
- * with this package in the file LICENSE.txt.
- * It is also available through the world-wide-web at this URL:
- * http://github.com/padraic/mockery/master/LICENSE
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to padraic@php.net so we can send you a copy immediately.
- *
- * @category   Mockery
- * @package    Mockery
- * @subpackage UnitTests
- * @copyright  Copyright (c) 2010 Pádraic Brady (http://blog.astrumfutura.com)
- * @license    http://github.com/padraic/mockery/blob/master/LICENSE New BSD License
- */
-
-use Mockery\Adapter\Phpunit\MockeryTestCase;
-use Mockery\MockInterface;
-use Mockery\Matcher\PHPUnitConstraint;
-
-class PHPUnitConstraintTest extends MockeryTestCase
-{
-    /** @var  PHPUnitConstraint */
-    protected $matcher;
-    /** @var  PHPUnitConstraint */
-    protected $rethrowingMatcher;
-    /** @var  MockInterface */
-    protected $constraint;
-
-    public function mockeryTestSetUp()
-    {
-        /*
-         * Revise by PHPUnit version
-         */
-        if (class_exists('\PHPUnit\Framework\AssertionFailedError')) {
-            $this->assertionFailedError = '\PHPUnit\Framework\AssertionFailedError';
-            $this->frameworkConstraint = '\PHPUnit\Framework\Constraint';
-        } else {
-            $this->assertionFailedError = '\PHPUnit_Framework_AssertionFailedError';
-            $this->frameworkConstraint = '\PHPUnit_Framework_Constraint';
-        }
-
-        $this->constraint = \Mockery::mock($this->frameworkConstraint);
-        $this->matcher = new PHPUnitConstraint($this->constraint);
-        $this->rethrowingMatcher = new PHPUnitConstraint($this->constraint, true);
-    }
-
-    public function testMatches()
-    {
-        $value1 = 'value1';
-        $value2 = 'value1';
-        $value3 = 'value1';
-        $this->constraint
-            ->shouldReceive('evaluate')
-            ->once()
-            ->with($value1)
-            ->getMock()
-            ->shouldReceive('evaluate')
-            ->once()
-            ->with($value2)
-            ->andThrow($this->assertionFailedError)
-            ->getMock()
-            ->shouldReceive('evaluate')
-            ->once()
-            ->with($value3)
-            ->getMock()
-        ;
-        $this->assertTrue($this->matcher->match($value1));
-        $this->assertFalse($this->matcher->match($value2));
-        $this->assertTrue($this->rethrowingMatcher->match($value3));
-    }
-
-    public function testMatchesWhereNotMatchAndRethrowing()
-    {
-        $this->expectException($this->assertionFailedError);
-        $value = 'value';
-        $this->constraint
-            ->shouldReceive('evaluate')
-            ->once()
-            ->with($value)
-            ->andThrow($this->assertionFailedError)
-        ;
-        $this->rethrowingMatcher->match($value);
-    }
-
-    public function test__toString()
-    {
-        $this->assertEquals('<Constraint>', $this->matcher);
-    }
-}