diff --git a/tests/PhpSpreadsheetTests/Calculation/RefErrorTest.php b/tests/PhpSpreadsheetTests/Calculation/RefErrorTest.php
index e9f45104c6..9c3055b2de 100644
--- a/tests/PhpSpreadsheetTests/Calculation/RefErrorTest.php
+++ b/tests/PhpSpreadsheetTests/Calculation/RefErrorTest.php
@@ -31,7 +31,7 @@ public function testRefError($expected, string $formula): void
         $sheet1->getCell('C2')->setValue('=Sheet2!A1');
         $sheet1->getCell('C3')->setValue('=Sheet2!A2');
         $sheet1->getCell('H1')->setValue($formula);
-        self::assertSame($expected, $sheet1->getCell('H1')->getCalculatedValue());
+        self::assertEqual($expected, $sheet1->getCell('H1')->getCalculatedValue());
         $spreadsheet->disconnectWorksheets();
     }