diff --git a/tests/PhpSpreadsheetTests/CommentTest.php b/tests/PhpSpreadsheetTests/CommentTest.php
index 1d7825f4..7d06162a 100644
--- a/tests/PhpSpreadsheetTests/CommentTest.php
+++ b/tests/PhpSpreadsheetTests/CommentTest.php
@@ -5,6 +5,7 @@ namespace PhpOffice\PhpSpreadsheetTests;
 use PhpOffice\PhpSpreadsheet\Comment;
 use PhpOffice\PhpSpreadsheet\RichText\RichText;
 use PhpOffice\PhpSpreadsheet\RichText\TextElement;
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
 use PhpOffice\PhpSpreadsheet\Style\Alignment;
 use PhpOffice\PhpSpreadsheet\Style\Color;
 use PHPUnit\Framework\TestCase;