diff --git a/gxml/DomMutationObservers.vala b/gxml/DomMutationObservers.vala
index 5d4e2bc23d5bece7b3caf4ec128e2658df8b8f5b..fa52a31d5166de80f9abe6c8c388d6a9ca488ec7 100644
--- a/gxml/DomMutationObservers.vala
+++ b/gxml/DomMutationObservers.vala
@@ -45,11 +45,11 @@ public class GXml.DomMutationObserverInit : GLib.Object {
 
 public interface GXml.DomMutationRecord : GLib.Object {
   public abstract string mtype { get; }
-  public abstract DomNode target { get; }
-  public abstract DomNodeList added_nodes { get; set; }
-  public abstract DomNodeList removed_nodes { get; set; }
-  public abstract DomNode? previous_sibling { get; }
-  public abstract DomNode? next_sibling { get; }
+  public abstract DomNode target { owned get; }
+  public abstract DomNodeList added_nodes { owned get; set; }
+  public abstract DomNodeList removed_nodes { owned get; set; }
+  public abstract DomNode? previous_sibling { owned get; }
+  public abstract DomNode? next_sibling { owned get; }
   public abstract string? attribute_name { get; }
   public abstract string? attribute_namespace { get; }
   public abstract string? old_value { get; }