diff --git a/infection.json.dist b/infection.json.dist
index c817f85..5b8e228 100644
--- a/infection.json.dist
+++ b/infection.json.dist
@@ -18,6 +18,11 @@
             "Fidry\\FileSystem\\Test\\FileSystemTestCase::tearDown"
         ],
 
+        "FalseValue": {
+            "ignore": [
+                "Fidry\\FileSystem\\Test\\FileSystemTestCase::safeGetCurrentWorkingDirectory"
+            ]
+        },
         "FunctionCallRemoval": false,
         "MethodCallRemoval": false,
         "PublicVisibility": false,
diff --git a/src/Test/FileSystemTestCase.php b/src/Test/FileSystemTestCase.php
index 8403d47..ff6c037 100644
--- a/src/Test/FileSystemTestCase.php
+++ b/src/Test/FileSystemTestCase.php
@@ -38,15 +38,18 @@
 
 use Fidry\FileSystem\FS;
 use PHPUnit\Framework\TestCase;
+use RuntimeException;
 use Stringable;
 use function array_map;
 use function array_values;
+use function chdir;
 use function dirname;
+use function getcwd;
 use function is_array;
 use function iterator_to_array;
 use function natcasesort;
 use function natsort;
-use function Safe\getcwd;
+use function sprintf;
 use function str_replace;
 use const DIRECTORY_SEPARATOR;
 
@@ -74,13 +77,13 @@ public static function tearDownAfterClass(): void
 
     protected function setUp(): void
     {
-        $this->cwd = getcwd();
+        $this->cwd = self::safeGetCurrentWorkingDirectory();
         $this->tmp = FS::makeTmpDir(
             static::getTmpDirNamespace(),
             static::class,
         );
         static::$lastKnownTmpNamespace = dirname($this->tmp);
-        chdir($this->tmp);
+        self::safeChdir($this->tmp);
     }
 
     protected function tearDown(): void
@@ -88,7 +91,7 @@ protected function tearDown(): void
         $wasSetupSkipped = '' === $this->cwd && '' === $this->tmp;
 
         if (!$wasSetupSkipped) {
-            chdir($this->cwd);
+            self::safeChdir($this->cwd);
             FS::remove($this->tmp);
         }
     }
@@ -114,4 +117,29 @@ final protected function normalizePaths(iterable $paths): array
 
         return array_values($normalizedPaths);
     }
+
+    private static function safeChdir(string $directory): void
+    {
+        $chdirResult = chdir($directory);
+
+        if (!$chdirResult) {
+            throw new RuntimeException(
+                sprintf(
+                    'Could not change the current working directory to "%s".',
+                    $directory,
+                ),
+            );
+        }
+    }
+
+    private static function safeGetCurrentWorkingDirectory(): string
+    {
+        $result = getcwd();
+
+        if (false === $result) {
+            throw new RuntimeException('Could not get the current working directory.');
+        }
+
+        return $result;
+    }
 }