diff --git a/tests/lib/SimpleSAML/Metadata/SAMLParserTest.php b/tests/lib/SimpleSAML/Metadata/SAMLParserTest.php
index 0d44c75cd39e049facd4428244441ef0936aecf0..7bcb4ad3b432ec6bf9f1a7e46e8b3128f4353225 100644
--- a/tests/lib/SimpleSAML/Metadata/SAMLParserTest.php
+++ b/tests/lib/SimpleSAML/Metadata/SAMLParserTest.php
@@ -2,8 +2,6 @@
 
 namespace SimpleSAML\Test\Metadata;
 
-require_once(__DIR__ . '/../../../SigningTestCase.php');
-
 use PHPUnit\Framework\TestCase;
 use RobRichards\XMLSecLibs\XMLSecurityDSig;
 use SimpleSAML\XML\Signer;
diff --git a/tests/lib/SimpleSAML/XML/SignerTest.php b/tests/lib/SimpleSAML/XML/SignerTest.php
index e6c96e527dfd9255d1dfac9123ca831384853d04..67b1f64f4c828d9f88e619c4532d270c957ebbd1 100644
--- a/tests/lib/SimpleSAML/XML/SignerTest.php
+++ b/tests/lib/SimpleSAML/XML/SignerTest.php
@@ -8,8 +8,6 @@ use SimpleSAML\Configuration;
 use SimpleSAML\Test\SigningTestCase;
 use SimpleSAML\XML\Signer;
 
-require_once(__DIR__ . '/../../../SigningTestCase.php');
-
 /**
  * Tests for SimpleSAML\XML\Signer.
  */
diff --git a/tests/lib/SimpleSAML/XML/ValidatorTest.php b/tests/lib/SimpleSAML/XML/ValidatorTest.php
index 3baf620386f82379284d1b9d7ccfdc99a43d9a7f..c4092d341d65ef6979e64abadadcd0982f9684d6 100644
--- a/tests/lib/SimpleSAML/XML/ValidatorTest.php
+++ b/tests/lib/SimpleSAML/XML/ValidatorTest.php
@@ -2,8 +2,6 @@
 
 namespace SimpleSAML\Test\XML;
 
-require_once(__DIR__ . '/../../../SigningTestCase.php');
-
 use org\bovigo\vfs\vfsStream;
 use PHPUnit\Framework\TestCase;
 use SimpleSAML\Test\SigningTestCase;