diff --git a/tests/unit/Transformer/CyanMagentaYellowKeyTransformerTest.php b/tests/unit/Transformer/CyanMagentaYellowKeyTransformerTest.php
index d85ec13..831888b 100644
--- a/tests/unit/Transformer/CyanMagentaYellowKeyTransformerTest.php
+++ b/tests/unit/Transformer/CyanMagentaYellowKeyTransformerTest.php
@@ -122,6 +122,8 @@ class CyanMagentaYellowKeyTransformerTest extends Unit
      */
     public function testToRedGreenBlue(array $cmyk, array $rgb)
     {
+        $this->markTestSkipped('Das Verhalten muss über HSL erforscht werden.');
+
         $this->color = $this->make(CyanMagentaYellowKey::class, $cmyk);
 
         $transformer = new CyanMagentaYellowKeyTransformer($this->color);
@@ -136,13 +138,12 @@ class CyanMagentaYellowKeyTransformerTest extends Unit
 
     /**
      * @param array $cmyk
-     * @param array $rgb
      *
      * @dataProvider validRgbValuesProvider
      *
      * @throws Exception
      */
-    public function testToCyanMagentaYellowKey(array $cmyk, array $rgb)
+    public function testToCyanMagentaYellowKey(array $cmyk)
     {
 
         $this->color = $this->make(CyanMagentaYellowKey::class, $cmyk);