diff --git a/main/xmldoc.c b/main/xmldoc.c
index 8e2a1f13b4..25f1fb6004 100644
--- a/main/xmldoc.c
+++ b/main/xmldoc.c
@@ -755,6 +755,7 @@ static char *xmldoc_get_syntax_fun(struct ast_xml_node *rootnode, const char *ro
 				if ((paramtype = ast_xml_get_attribute(node, "required"))) {
 					if (!ast_true(paramtype)) {
 						optmidnode = 1;
+						ast_xml_free_attr(paramtype);
 						break;
 					}
 					ast_xml_free_attr(paramtype);