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-rw-r--r--vernac/auto_ind_decl.ml2
1 files changed, 1 insertions, 1 deletions
diff --git a/vernac/auto_ind_decl.ml b/vernac/auto_ind_decl.ml
index 7af391758..66a4a2e49 100644
--- a/vernac/auto_ind_decl.ml
+++ b/vernac/auto_ind_decl.ml
@@ -190,7 +190,7 @@ let build_beq_scheme mode kn =
match EConstr.kind sigma c with
| Rel x -> mkRel (x-nlist+ndx), Safe_typing.empty_private_constants
| Var x ->
- let eid = id_of_string ("eq_"^(string_of_id x)) in
+ let eid = Id.of_string ("eq_"^(Id.to_string x)) in
let () =
try ignore (Environ.lookup_named eid env)
with Not_found -> raise (ParameterWithoutEquality (VarRef x))