diff --git a/clutter/clutter-script.c b/clutter/clutter-script.c
index a6f33567f..efc48c07c 100644
--- a/clutter/clutter-script.c
+++ b/clutter/clutter-script.c
@@ -804,7 +804,7 @@ json_object_end (JsonParser *parser,
       pinfo = g_slice_new (PropertyInfo);
 
       pinfo->name = g_strdup (name);
-      pinfo->node = node;
+      pinfo->node = json_node_copy (node);
       pinfo->pspec = NULL;
 
       oinfo->properties = g_list_prepend (oinfo->properties, pinfo);
@@ -1618,6 +1618,9 @@ property_info_free (gpointer data)
     {
       PropertyInfo *pinfo = data;
 
+      if (pinfo->node)
+        json_node_free (pinfo->node);
+
       if (pinfo->pspec)
         g_param_spec_unref (pinfo->pspec);