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-rw-r--r--proofs/proof_using.ml2
1 files changed, 1 insertions, 1 deletions
diff --git a/proofs/proof_using.ml b/proofs/proof_using.ml
index 2c489d6de..f0854e9aa 100644
--- a/proofs/proof_using.ml
+++ b/proofs/proof_using.ml
@@ -76,7 +76,7 @@ and full_set env =
List.fold_right Id.Set.add (List.map NamedDecl.get_id (named_context env)) Id.Set.empty
let process_expr env e ty =
- let ty_expr = SsSingl(Loc.ghost, Id.of_string "Type") in
+ let ty_expr = SsSingl(Loc.tag @@ Id.of_string "Type") in
let v_ty = process_expr env ty_expr ty in
let s = Id.Set.union v_ty (process_expr env e ty) in
Id.Set.elements s