diff --git a/include/types.h b/include/types.h
index de6e6c75..07542bd6 100644
--- a/include/types.h
+++ b/include/types.h
@@ -57,6 +57,7 @@ struct trdstr;
 struct trtstr;
 struct comstr;
 struct cmndstr;
+struct ulist;
 
 union empobj_storage;