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-rw-r--r--pretyping/evarconv.ml2
1 files changed, 1 insertions, 1 deletions
diff --git a/pretyping/evarconv.ml b/pretyping/evarconv.ml
index 95680e18a..1318942c5 100644
--- a/pretyping/evarconv.ml
+++ b/pretyping/evarconv.ml
@@ -1268,7 +1268,7 @@ let solve_unconstrained_impossible_cases env evd =
match ev_info.evar_source with
| loc,Evar_kinds.ImpossibleCase ->
let j, ctx = coq_unit_judge () in
- let evd' = Evd.merge_context_set Evd.univ_flexible_alg ~loc evd' ctx in
+ let evd' = Evd.merge_context_set Evd.univ_flexible_alg ?loc evd' ctx in
let ty = j_type j in
let conv_algo = evar_conv_x full_transparent_state in
let evd' = check_evar_instance evd' evk ty conv_algo in