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-rw-r--r--pretyping/retyping.ml3
1 files changed, 1 insertions, 2 deletions
diff --git a/pretyping/retyping.ml b/pretyping/retyping.ml
index da12c6449..c2f42b34e 100644
--- a/pretyping/retyping.ml
+++ b/pretyping/retyping.ml
@@ -29,8 +29,7 @@ let rec subst_type env sigma typ = function
| [] -> typ
| h::rest ->
match kind_of_term (whd_betadeltaiota env sigma typ) with
- | Prod (na,c1,c2) ->
- subst_type (push_rel (na,None,c1) env) sigma (subst1 h c2) rest
+ | Prod (na,c1,c2) -> subst_type env sigma (subst1 h c2) rest
| _ -> anomaly "Non-functional construction"
(* Si ft est le type d'un terme f, lequel est appliqué à args, *)