diff --git a/src/FileStream.php b/src/FileStream.php
index f25725f..2234b35 100644
--- a/src/FileStream.php
+++ b/src/FileStream.php
@@ -45,6 +45,12 @@ class FileStream extends BaseFileStream
      */
     protected $currentFileCount = 0;
 
+    /**
+     * List of Files
+     * @var array
+     */
+    protected $files = [];
+
     /**
      * @inheritdoc
      * @param string|null $header File header
@@ -65,13 +71,31 @@ public function __construct($fileName, $header = null, $footer = null, $maxCount
         }
     }
 
+    /**
+     * Adds the given Filename to the internal Array
+     * @param $filename
+     */
+    protected function addFile($filename)
+    {
+        $this->files[] = $filename;
+    }
+
+    /**
+     * Returns the List of written Files
+     * @return array
+     */
+    public function getFileList()
+    {
+        return $this->files;
+    }
+
     /**
      * @inheritdoc
      */
     protected function openHandle()
     {
         parent::openHandle();
-
+        $this->addFile($this->getFileName());
         if ($this->header !== null) {
             $this->write($this->header, false);
         }
diff --git a/tests/FileStreamTest.php b/tests/FileStreamTest.php
index 36ec0b6..0c2a687 100644
--- a/tests/FileStreamTest.php
+++ b/tests/FileStreamTest.php
@@ -81,4 +81,33 @@ public function testPlaceholderValidation()
             3
         );
     }
+
+
+    public function testFilestreamGathersListOfFilenames()
+    {
+        $stream = $this->prepareStreamToGenerateAmountOfFiles(3);
+
+        $this->assertCount(3, $stream->getFileList());
+    }
+
+    /**
+     * @param $amount
+     * @return FileStream
+     */
+    private function prepareStreamToGenerateAmountOfFiles($amount)
+    {
+        $stream = new FileStream(
+            $this->runtimeDir . '/sitemap{count}.xml',
+            '<urlset>',
+            '</urlset>',
+            $amount
+        );
+
+        foreach ($urls = range(0, $amount * $amount - $amount) as $url) {
+            $stream->write(
+                '<url><loc>https://github.com?page' . $url . '</loc></url>' . PHP_EOL
+            );
+        }
+        return $stream;
+    }
 }