diff --git a/src/TextUI/Command.php b/src/TextUI/Command.php
index 4b7a788348a..d91c8f893c4 100644
--- a/src/TextUI/Command.php
+++ b/src/TextUI/Command.php
@@ -724,7 +724,11 @@ protected function handleArguments(array $argv): void
                     break;
 
                 case '--whitelist':
-                    $this->arguments['whitelist'] = $option[1];
+                    if (!isset($this->arguments['whitelist'])) {
+                        $this->arguments['whitelist'] = [];
+                    }
+
+                    $this->arguments['whitelist'][] = $option[1];
 
                     break;
 
diff --git a/src/TextUI/TestRunner.php b/src/TextUI/TestRunner.php
index 8372d2c23e3..6fabf739b9a 100644
--- a/src/TextUI/TestRunner.php
+++ b/src/TextUI/TestRunner.php
@@ -457,7 +457,15 @@ public function doRun(Test $suite, array $arguments = [], bool $exit = true): Te
             $whitelistFromOption            = false;
 
             if (isset($arguments['whitelist'])) {
-                $this->codeCoverageFilter->addDirectoryToWhitelist($arguments['whitelist']);
+                if (!\is_array($arguments['whitelist'])) {
+                    $whitelistDirectories = [$arguments['whitelist']];
+                } else {
+                    $whitelistDirectories = $arguments['whitelist'];
+                }
+
+                foreach ($whitelistDirectories as $whitelistDirectory) {
+                    $this->codeCoverageFilter->addDirectoryToWhitelist($whitelistDirectory);
+                }
 
                 $whitelistFromOption = true;
             }
diff --git a/tests/_files/phpt-for-multiwhitelist-coverage.phpt b/tests/_files/phpt-for-multiwhitelist-coverage.phpt
new file mode 100644
index 00000000000..7dff83ea98f
--- /dev/null
+++ b/tests/_files/phpt-for-multiwhitelist-coverage.phpt
@@ -0,0 +1,10 @@
+--TEST--
+PHPT for testing coverage using multiple whitespace arguments
+--FILE--
+<?php declare(strict_types=1);
+require __DIR__ . '/../bootstrap.php';
+$coveredClass = new CoveredClass();
+$coveredClass->publicMethod();
+$anotherCoveredClass = new SampleClass(1, 2, 'a');
+$testing = $anotherCoveredClass->a;
+--EXPECT--
diff --git a/tests/end-to-end/code-coverage-multiple-whitelist.phpt b/tests/end-to-end/code-coverage-multiple-whitelist.phpt
new file mode 100644
index 00000000000..6d8b58742f5
--- /dev/null
+++ b/tests/end-to-end/code-coverage-multiple-whitelist.phpt
@@ -0,0 +1,46 @@
+--TEST--
+phpunit --colors=never --coverage-text=php://stdout ../../_files/phpt-for-coverage.phpt --whitelist ../../_files/CoveredClass.php
+--SKIPIF--
+<?php declare(strict_types=1);
+if (!extension_loaded('xdebug')) {
+    print 'skip: Extension xdebug is required.';
+}
+--FILE--
+<?php declare(strict_types=1);
+$_SERVER['argv'][1] = '--no-configuration';
+$_SERVER['argv'][2] = '--bootstrap';
+$_SERVER['argv'][3] = __DIR__ . '/../bootstrap.php';
+$_SERVER['argv'][4] = '--colors=never';
+$_SERVER['argv'][5] = '--coverage-text=php://stdout';
+$_SERVER['argv'][6] = __DIR__ . '/../_files/phpt-for-multiwhitelist-coverage.phpt';
+$_SERVER['argv'][7] = '--whitelist';
+$_SERVER['argv'][8] = __DIR__ . '/../_files/CoveredClass.php';
+$_SERVER['argv'][9] = '--whitelist';
+$_SERVER['argv'][10] = __DIR__ . '/../_files/SampleClass.php';
+
+require __DIR__ . '/../bootstrap.php';
+PHPUnit\TextUI\Command::main();
+--EXPECTF--
+PHPUnit %s by Sebastian Bergmann and contributors.
+
+.                                                                   1 / 1 (100%)
+
+Time: %s, Memory: %s
+
+OK (1 test, 1 assertion)
+
+
+Code Coverage Report:%w
+%s
+%w
+ Summary:%w
+  Classes: 100.00% (3/3)%w
+  Methods: 100.00% (%d/%d)%w
+  Lines:   100.00% (%d/%d)
+
+CoveredClass
+  Methods: 100.00% ( %d/ %d)   Lines: 100.00% (  %d/  %d)
+CoveredParentClass
+  Methods: 100.00% ( %d/ %d)   Lines: 100.00% (  %d/  %d)
+SampleClass
+  Methods: 100.00% ( %d/ %d)   Lines: 100.00% (  %d/  %d)