diff --git a/gxml/Serializable.vala b/gxml/Serializable.vala
index a85065c822d37dcae81bb59d5bd3afc1f9c1742b..67ce8bbb58d4f132c0ee5d6000d2252429703e3d 100644
--- a/gxml/Serializable.vala
+++ b/gxml/Serializable.vala
@@ -214,7 +214,7 @@ namespace GXml {
      * @param prop a {@link GLib.ParamSpec} describing attribute to serialize
      * @param node set to the {@link GXml.xNode} representing this attribute
      */
-    public signal void serialize_unknown_property_type (GXml.xNode element,
+    public signal void serialize_unknown_property_type (GXml.Node element,
                                                         ParamSpec prop,
                                                         out GXml.xNode node);
 
diff --git a/test/SerializableTest.vala b/test/SerializableTest.vala
index b467658ec33245e74927033b27b32cd2951d8ef6..068c74c62ae419f3b679d2972cfc2b41a13938f1 100644
--- a/test/SerializableTest.vala
+++ b/test/SerializableTest.vala
@@ -120,8 +120,9 @@ public class SerializableCapsicum : GXml.SerializableJson {
 			assert_not_reached ();
 		}
 	}
-	private void serialize_unknown_property_type (GXml.xNode element, ParamSpec prop, out GXml.xNode node)
+	private void serialize_unknown_property_type (GXml.Node elem, ParamSpec prop, out GXml.xNode node)
 	{
+		xElement element = (xElement) elem;
 		xDocument doc = element.owner_document;
 		switch (prop.name) {
 		case "ratings":