diff --git a/relaxng.c b/relaxng.c
index b1d4a77..61daa0d 100644
--- a/relaxng.c
+++ b/relaxng.c
@@ -10663,6 +10663,26 @@
 }
 
 /**
+ * xmlRelaxNGSetValidStructuredErrors:
+ * @ctxt:  a Relax-NG validation context
+ * @serror:  the structured error function
+ * @ctx: the functions context
+ *
+ * Set the structured error callback
+ */
+void
+xmlRelaxNGSetValidStructuredErrors(xmlRelaxNGValidCtxtPtr ctxt,
+								  xmlStructuredErrorFunc serror, void *ctx)
+{
+    if (ctxt == NULL)
+        return;
+	ctxt->serror = serror;
+    ctxt->error = NULL;
+    ctxt->warning = NULL;
+    ctxt->userData = ctx;
+}
+
+/**
  * xmlRelaxNGGetValidErrors:
  * @ctxt:  a Relax-NG validation context
  * @err:  the error function result