diff --git a/contrib/xml2/xpath.c b/contrib/xml2/xpath.c
index 23d3f332dba..2820874cb5e 100644
--- a/contrib/xml2/xpath.c
+++ b/contrib/xml2/xpath.c
@@ -176,7 +176,7 @@ pgxmlNodeSetToText(xmlNodeSetPtr nodeset,
 		xmlBufferWriteCHAR(buf, toptagname);
 		xmlBufferWriteChar(buf, ">");
 	}
-	result = xmlStrdup(buf->content);
+	result = xmlStrdup(xmlBufferContent(buf));
 	xmlBufferFree(buf);
 	return result;
 }