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-rw-r--r--toplevel/classes.ml2
1 files changed, 1 insertions, 1 deletions
diff --git a/toplevel/classes.ml b/toplevel/classes.ml
index a45ab88606..590f5c6f47 100644
--- a/toplevel/classes.ml
+++ b/toplevel/classes.ml
@@ -158,7 +158,7 @@ let new_instance ?(global=false) ctx (instid, bk, cl) props ?(generalize=true)
List.fold_right (fun (na, b, t) (args, args') ->
match b with
| None -> (List.tl args, List.hd args :: args')
- | Some b -> (args, b :: args'))
+ | Some b -> (args, substl args' b :: args'))
(snd cl.cl_context) (args, [])
in
cl, c', ctx', ctx, len, imps, args