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-rw-r--r--contrib/extraction/extract_env.ml1
-rw-r--r--contrib/extraction/modutil.ml1
-rw-r--r--contrib/extraction/modutil.mli1
3 files changed, 3 insertions, 0 deletions
diff --git a/contrib/extraction/extract_env.ml b/contrib/extraction/extract_env.ml
index 78fb578e99..8c75f2df5c 100644
--- a/contrib/extraction/extract_env.ml
+++ b/contrib/extraction/extract_env.ml
@@ -19,6 +19,7 @@ open Table
open Extraction
open Modutil
open Common
+open Mod_subst
(*s Obtaining Coq environment. *)
diff --git a/contrib/extraction/modutil.ml b/contrib/extraction/modutil.ml
index 1a40a83307..673c8e929d 100644
--- a/contrib/extraction/modutil.ml
+++ b/contrib/extraction/modutil.ml
@@ -16,6 +16,7 @@ open Util
open Miniml
open Table
open Mlutil
+open Mod_subst
(*S Functions upon modules missing in [Modops]. *)
diff --git a/contrib/extraction/modutil.mli b/contrib/extraction/modutil.mli
index ec628b329e..07425c30af 100644
--- a/contrib/extraction/modutil.mli
+++ b/contrib/extraction/modutil.mli
@@ -13,6 +13,7 @@ open Declarations
open Environ
open Libnames
open Miniml
+open Mod_subst
(*s Functions upon modules missing in [Modops]. *)