diff --git a/tests/PeselValidationTest.php b/tests/PeselValidationTest.php
index 12f3125..296e92c 100644
--- a/tests/PeselValidationTest.php
+++ b/tests/PeselValidationTest.php
@@ -26,7 +26,7 @@ public function testHasBirthDateReturnsCorrectValue(Pesel $pesel, string $birthD
         $this->assertEquals(
             $isCorrect,
             $actual,
-            "Invalid gender. Got $actualStr, expected $isCorrectStr for number $pesel"
+            "Invalid birth date. Got $actualStr, expected $isCorrectStr for number $pesel"
         );
     }