diff --git a/src/Framework/MockObject/MockMethod.php b/src/Framework/MockObject/MockMethod.php
index 6b5efd1bedc..ccefba8bca3 100644
--- a/src/Framework/MockObject/MockMethod.php
+++ b/src/Framework/MockObject/MockMethod.php
@@ -306,7 +306,7 @@ private static function getMethodParameters(\ReflectionMethod $method, bool $for
                 if (!$parameter->isVariadic()) {
                     if ($parameter->isDefaultValueAvailable()) {
                         try {
-                            $value = $parameter->getDefaultValueConstantName();
+                            $value = \var_export($parameter->getDefaultValue(), true);
                         } catch (\ReflectionException $e) {
                             throw new RuntimeException(
                                 $e->getMessage(),
@@ -314,22 +314,6 @@ private static function getMethodParameters(\ReflectionMethod $method, bool $for
                                 $e
                             );
                         }
-
-                        if ($value === null) {
-                            try {
-                                $value = \var_export($parameter->getDefaultValue(), true);
-                            } catch (\ReflectionException $e) {
-                                throw new RuntimeException(
-                                    $e->getMessage(),
-                                    (int) $e->getCode(),
-                                    $e
-                                );
-                            }
-                        } elseif (!\defined($value)) {
-                            $rootValue = \preg_replace('/^.*\\\\/', '', $value);
-                            $value     = \defined($rootValue) ? $rootValue : $value;
-                        }
-
                         $default = ' = ' . $value;
                     } elseif ($parameter->isOptional()) {
                         $default = ' = null';
diff --git a/tests/end-to-end/mock-objects/generator/3154_namespaced_constant_resolving.phpt b/tests/end-to-end/mock-objects/generator/3154_namespaced_constant_resolving.phpt
index 45f83324fd8..a50677a6438 100644
--- a/tests/end-to-end/mock-objects/generator/3154_namespaced_constant_resolving.phpt
+++ b/tests/end-to-end/mock-objects/generator/3154_namespaced_constant_resolving.phpt
@@ -14,7 +14,7 @@ namespace Is\Namespaced;
  */
 
 const A_CONSTANT = 17;
-const PHP_VERSION = "0.0.0";
+const PHP_VERSION = "";
 
 class Issue3154
 {
@@ -45,7 +45,7 @@ class Issue3154Mock extends Is\Namespaced\Issue3154 implements PHPUnit\Framework
     use \PHPUnit\Framework\MockObject\Method;
     use \PHPUnit\Framework\MockObject\MockedCloneMethod;
 
-    public function a(int $i = PHP_INT_MAX, int $j = Is\Namespaced\A_CONSTANT, string $v = PHP_VERSION, string $z = '#'): string
+    public function a(int $i = %d, int $j = 17, string $v = '%s', string $z = '#'): string
     {
         $__phpunit_arguments = [$i, $j, $v, $z];
         $__phpunit_count     = func_num_args();
diff --git a/tests/end-to-end/mock-objects/generator/constant_as_parameter_default_value.phpt b/tests/end-to-end/mock-objects/generator/constant_as_parameter_default_value.phpt
index 09d3aea05f6..c620a20cff7 100644
--- a/tests/end-to-end/mock-objects/generator/constant_as_parameter_default_value.phpt
+++ b/tests/end-to-end/mock-objects/generator/constant_as_parameter_default_value.phpt
@@ -4,7 +4,7 @@
 <?php declare(strict_types=1);
 class Foo
 {
-    public function bar(int $baz = PHP_INT_MIN)
+    public function bar(int $baz = PHP_INT_MAX)
     {
     }
 }
@@ -31,7 +31,7 @@ class MockFoo extends Foo implements PHPUnit\Framework\MockObject\MockObject
     use \PHPUnit\Framework\MockObject\Method;
     use \PHPUnit\Framework\MockObject\MockedCloneMethod;
 
-    public function bar(int $baz = PHP_INT_MIN)
+    public function bar(int $baz = %d)
     {
         $__phpunit_arguments = [$baz];
         $__phpunit_count     = func_num_args();
diff --git a/tests/end-to-end/mock-objects/mock-method/with_argument_default_constant.phpt b/tests/end-to-end/mock-objects/mock-method/with_argument_default_constant.phpt
index e9a62a07580..4f8c02ca3d1 100644
--- a/tests/end-to-end/mock-objects/mock-method/with_argument_default_constant.phpt
+++ b/tests/end-to-end/mock-objects/mock-method/with_argument_default_constant.phpt
@@ -2,11 +2,14 @@
 Mock static method
 --FILE--
 <?php declare(strict_types=1);
-define('FOO_CONST', 1);
+define('GLOBAL_CONSTANT', 1);
 
 class Foo
 {
-    private function bar($arg = FOO_CONST){}
+    public const CLASS_CONSTANT_PUBLIC = 2;
+    protected const CLASS_CONSTANT_PROTECTED = 3;
+    private const CLASS_CONSTANT_PRIVATE = 4;
+    private function bar($a = GLOBAL_CONSTANT, $b = self::CLASS_CONSTANT_PUBLIC, $c = self::CLASS_CONSTANT_PROTECTED, $d = self::CLASS_CONSTANT_PRIVATE){}
 }
 
 require __DIR__ . '/../../../../vendor/autoload.php';
@@ -23,15 +26,15 @@ $code = $mockMethod->generateCode();
 print $code;
 --EXPECT--
 
-private function bar($arg = FOO_CONST)
+private function bar($a = 1, $b = 2, $c = 3, $d = 4)
     {
-        $__phpunit_arguments = [$arg];
+        $__phpunit_arguments = [$a, $b, $c, $d];
         $__phpunit_count     = func_num_args();
 
-        if ($__phpunit_count > 1) {
+        if ($__phpunit_count > 4) {
             $__phpunit_arguments_tmp = func_get_args();
 
-            for ($__phpunit_i = 1; $__phpunit_i < $__phpunit_count; $__phpunit_i++) {
+            for ($__phpunit_i = 4; $__phpunit_i < $__phpunit_count; $__phpunit_i++) {
                 $__phpunit_arguments[] = $__phpunit_arguments_tmp[$__phpunit_i];
             }
         }