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-rw-r--r--pretyping/reductionops.ml2
1 files changed, 1 insertions, 1 deletions
diff --git a/pretyping/reductionops.ml b/pretyping/reductionops.ml
index bfee07e7f0..838bf22c66 100644
--- a/pretyping/reductionops.ml
+++ b/pretyping/reductionops.ml
@@ -1707,7 +1707,7 @@ let splay_arity env sigma c =
let l, c = splay_prod env sigma c in
match EConstr.kind sigma c with
| Sort s -> l,s
- | _ -> invalid_arg "splay_arity"
+ | _ -> raise Reduction.NotArity
let sort_of_arity env sigma c = snd (splay_arity env sigma c)