diff --git a/java/com/google/gerrit/server/restapi/change/DeleteAssignee.java b/java/com/google/gerrit/server/restapi/change/DeleteAssignee.java
index 20fd675..842ed2a 100644
--- a/java/com/google/gerrit/server/restapi/change/DeleteAssignee.java
+++ b/java/com/google/gerrit/server/restapi/change/DeleteAssignee.java
@@ -93,10 +93,7 @@
       }
       IdentifiedUser deletedAssigneeUser = userFactory.create(currentAssigneeId);
       deletedAssignee = deletedAssigneeUser.state();
-      // noteDb
       update.removeAssignee();
-      // reviewDb
-      change.setAssignee(null);
       addMessage(ctx, update, deletedAssigneeUser);
       return true;
     }