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-rw-r--r--kernel/subtyping.ml1
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/subtyping.ml b/kernel/subtyping.ml
index 2f39dc61a3..383f7c2c95 100644
--- a/kernel/subtyping.ml
+++ b/kernel/subtyping.ml
@@ -18,6 +18,7 @@ open Environ
open Reduction
open Inductive
open Modops
+open Mod_subst
(*i*)
(* This local type is used to subtype a constant with a constructor or