diff --git a/src/test/java/de/backendstack21/realtime/pubsub/IncomingMessageTest.java b/src/test/java/de/backendstack21/realtime/pubsub/IncomingMessageTest.java
index 88b362a..5c25649 100644
--- a/src/test/java/de/backendstack21/realtime/pubsub/IncomingMessageTest.java
+++ b/src/test/java/de/backendstack21/realtime/pubsub/IncomingMessageTest.java
@@ -45,7 +45,7 @@ public void testFromMap_MissingFields() {
         assertNotNull(incomingMessage);
         assertEquals("test.topic", incomingMessage.getTopic());
         assertNull(incomingMessage.getMessageType());
-        assertNull(incomingMessage.getCompression());
+        assertFalse(incomingMessage.getCompression());
         assertNull(incomingMessage.getData());
     }