diff --git a/tests/unit/Definition/BankSwiftCodeTest.php b/tests/unit/Definition/BankSwiftCodeTest.php
deleted file mode 100644
index c669b06..0000000
--- a/tests/unit/Definition/BankSwiftCodeTest.php
+++ /dev/null
@@ -1,22 +0,0 @@
-<?php
-
-namespace GoPay\Definition\Payment;
-
-class BankSwiftCodeTest extends \PHPUnit_Framework_TestCase
-{
-    public function testSwiftCodeHasEightOrTwelveCharacters()
-    {
-        $reflection = new \ReflectionClass('GoPay\Definition\Payment\BankSwiftCode');
-        foreach ($reflection->getConstants() as $code) {
-            if ($code != "OTHERS") {
-                $this->assertSwiftCodeLength($code);
-            }
-        }
-    }
-
-    private function assertSwiftCodeLength($code)
-    {
-        $expectedLength = $code == BankSwiftCode::ERA ? 12 : 8;
-        assertThat(strlen($code), is($expectedLength));
-    }
-}