diff --git a/uri.c b/uri.c
index 92448b29..a149f23c 100644
--- a/uri.c
+++ b/uri.c
@@ -770,6 +770,8 @@ xmlParse3986HierPart(xmlURIPtr uri, const char **str)
         cur += 2;
 	ret = xmlParse3986Authority(uri, &cur);
 	if (ret != 0) return(ret);
+	if (uri->server == NULL)
+	    uri->port = -1;
 	ret = xmlParse3986PathAbEmpty(uri, &cur);
 	if (ret != 0) return(ret);
 	*str = cur;