diff --git a/src/test/java/device/RadioPlayerTest.java b/src/test/java/device/RadioPlayerTest.java
index 70eb705..9c34834 100644
--- a/src/test/java/device/RadioPlayerTest.java
+++ b/src/test/java/device/RadioPlayerTest.java
@@ -29,7 +29,12 @@ class RadioPlayerTest {
         rp.quieter();
         assertThat(rp.getLautstaerke()).isEqualTo(0);
     }
-
+    @Test
+    void quieterMax() {
+        rp.setLautstaerke(0);
+        rp.quieter();
+        assertThat(rp.getLautstaerke()).isEqualTo(0);
+    }
 /*
     @Test
     void getVolume() {