diff --git a/tests/Data/AlphaNumTest.php b/tests/Data/AlphaNumTest.php
index 444190ea0..b05190990 100644
--- a/tests/Data/AlphaNumTest.php
+++ b/tests/Data/AlphaNumTest.php
@@ -15,7 +15,7 @@ use chillerlan\QRCode\Data\AlphaNum;
 /**
  * Tests the AlphaNum class
  */
-final class AlphaNumTest extends DatainterfaceTestAbstract{
+final class AlphaNumTest extends DataInterfaceTestAbstract{
 
 	protected string $FQN      = AlphaNum::class;
 	protected string $testdata = '0 $%*+-./:';
diff --git a/tests/Data/ByteTest.php b/tests/Data/ByteTest.php
index 3b3c02cea..3fe507856 100644
--- a/tests/Data/ByteTest.php
+++ b/tests/Data/ByteTest.php
@@ -15,7 +15,7 @@ use chillerlan\QRCode\Data\Byte;
 /**
  * Tests the Byte class
  */
-final class ByteTest extends DatainterfaceTestAbstract{
+final class ByteTest extends DataInterfaceTestAbstract{
 
 	protected string $FQN      = Byte::class;
 	protected string $testdata = '[¯\_(ツ)_/¯]';
diff --git a/tests/Data/DatainterfaceTestAbstract.php b/tests/Data/DataInterfaceTestAbstract.php
similarity index 97%
rename from tests/Data/DatainterfaceTestAbstract.php
rename to tests/Data/DataInterfaceTestAbstract.php
index 36810aaa1..99515229b 100644
--- a/tests/Data/DatainterfaceTestAbstract.php
+++ b/tests/Data/DataInterfaceTestAbstract.php
@@ -1,6 +1,6 @@
 <?php
 /**
- * Class DatainterfaceTestAbstract
+ * Class DataInterfaceTestAbstract
  *
  * @created      24.11.2017
  * @author       Smiley <smiley@chillerlan.net>
@@ -21,7 +21,7 @@ use function str_repeat;
 /**
  * The data interface test abstract
  */
-abstract class DatainterfaceTestAbstract extends TestCase{
+abstract class DataInterfaceTestAbstract extends TestCase{
 
 	protected ReflectionClass $reflection;
 	protected QRData          $QRData;
diff --git a/tests/Data/KanjiTest.php b/tests/Data/KanjiTest.php
index fc89851d0..22131b81b 100644
--- a/tests/Data/KanjiTest.php
+++ b/tests/Data/KanjiTest.php
@@ -15,7 +15,7 @@ use chillerlan\QRCode\Data\Kanji;
 /**
  * Tests the Kanji class
  */
-final class KanjiTest extends DatainterfaceTestAbstract{
+final class KanjiTest extends DataInterfaceTestAbstract{
 
 	protected string $FQN      = Kanji::class;
 	protected string $testdata = '茗荷茗荷茗荷茗荷茗荷';
diff --git a/tests/Data/NumberTest.php b/tests/Data/NumberTest.php
index 73a398df5..4799e24ce 100644
--- a/tests/Data/NumberTest.php
+++ b/tests/Data/NumberTest.php
@@ -15,7 +15,7 @@ use chillerlan\QRCode\Data\Number;
 /**
  * Tests the Number class
  */
-final class NumberTest extends DatainterfaceTestAbstract{
+final class NumberTest extends DataInterfaceTestAbstract{
 
 	protected string $FQN      = Number::class;
 	protected string $testdata = '0123456789';