diff --git a/ebean-core/src/test/java/org/tests/json/TestDbJson_Jackson3.java b/ebean-core/src/test/java/org/tests/json/TestDbJson_Jackson3.java
index e8d8abdfd..2f74be109 100644
--- a/ebean-core/src/test/java/org/tests/json/TestDbJson_Jackson3.java
+++ b/ebean-core/src/test/java/org/tests/json/TestDbJson_Jackson3.java
@@ -161,10 +161,7 @@ public class TestDbJson_Jackson3 extends BaseTestCase {
     final EBasicJsonList found = DB.find(EBasicJsonList.class, bean.getId());
     found.getBeanList().get(0).setName("p1-mod");
 
-//    BeanState state = DB.getBeanState(found);
-//    assertThat(state.getChangedProps()).containsExactlyInAnyOrder("beanList");
-    // this test fails, because we have a OmList instead of a GenericObject
-    // TODO: Can/Should we enhance the @DbJson/@DbJsonB annotations with a property "dirtyDetection"
-
+    BeanState state = DB.getBeanState(found);
+    assertThat(state.getChangedProps()).containsExactlyInAnyOrder("beanList");
   }
 }
diff --git a/ebean-core/src/test/java/org/tests/model/json/EBasicJsonList.java b/ebean-core/src/test/java/org/tests/model/json/EBasicJsonList.java
index d5ce2c309..f76d282f7 100644
--- a/ebean-core/src/test/java/org/tests/model/json/EBasicJsonList.java
+++ b/ebean-core/src/test/java/org/tests/model/json/EBasicJsonList.java
@@ -9,6 +9,7 @@ import javax.persistence.Id;
 import javax.persistence.Version;
 import java.util.*;
 
+import static io.ebean.annotation.MutationDetection.HASH;
 import static io.ebean.annotation.MutationDetection.SOURCE;
 
 @Entity
@@ -22,7 +23,7 @@ public class EBasicJsonList {
   @DbJson(length = 700, name = "beans")
   Set<PlainBean> beanSet;
 
-  @DbJsonB
+  @DbJsonB(mutationDetection = HASH)
   List<PlainBean> beanList;
 
   @DbJson(length = 700)