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-rw-r--r--proofs/proof_global.ml2
1 files changed, 1 insertions, 1 deletions
diff --git a/proofs/proof_global.ml b/proofs/proof_global.ml
index d659eba24..32eb9a3c1 100644
--- a/proofs/proof_global.ml
+++ b/proofs/proof_global.ml
@@ -207,7 +207,7 @@ let discard (loc,id) =
let n = List.length !pstates in
discard_gen id;
if Int.equal (List.length !pstates) n then
- CErrors.user_err ~loc
+ CErrors.user_err ?loc
~hdr:"Pfedit.delete_proof" (str"No such proof" ++ msg_proofs ())
let discard_current () =