diff --git a/core/src/main/java/io/cloudevents/core/format/ContentType.java b/core/src/main/java/io/cloudevents/core/format/ContentType.java
index 1d8656393..c5b19f883 100644
--- a/core/src/main/java/io/cloudevents/core/format/ContentType.java
+++ b/core/src/main/java/io/cloudevents/core/format/ContentType.java
@@ -45,6 +45,10 @@ public enum ContentType {
      * The content type for transports sending cloudevents in the protocol buffer format.
      */
     PROTO("application/cloudevents+protobuf"),
+    /**
+     * The content type for transports sending cloudevents in the compact Avro format.
+     */
+    AVRO_COMPACT("application/cloudevents+avrocompact"),
     /**
      * The content type for transports sending cloudevents in XML format.
      */
diff --git a/formats/avro-compact/src/test/java/io/cloudevents/avro/compact/AvroCompactFormatTest.java b/formats/avro-compact/src/test/java/io/cloudevents/avro/compact/AvroCompactFormatTest.java
index e87657bc2..484ab15f9 100644
--- a/formats/avro-compact/src/test/java/io/cloudevents/avro/compact/AvroCompactFormatTest.java
+++ b/formats/avro-compact/src/test/java/io/cloudevents/avro/compact/AvroCompactFormatTest.java
@@ -28,6 +28,7 @@
 import java.time.ZoneOffset;
 import java.util.Collections;
 
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertNotNull;
 
@@ -67,5 +68,10 @@ void format() {
 
         assertEquals(event, deserialized);
 
+        byte[] reserialized = format.serialize(deserialized);
+
+        assertArrayEquals(serialized, reserialized);
+        
+
     }
 }