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-rw-r--r--engine/universes.ml2
1 files changed, 1 insertions, 1 deletions
diff --git a/engine/universes.ml b/engine/universes.ml
index 7f5bf24b7..0a2045a04 100644
--- a/engine/universes.ml
+++ b/engine/universes.ml
@@ -161,7 +161,7 @@ let compare_head_gen_proj env equ eqs eqc' m n =
| Proj (p, c), App (f, args)
| App (f, args), Proj (p, c) ->
(match kind_of_term f with
- | Const (p', u) when eq_constant (Projection.constant p) p' ->
+ | Const (p', u) when Constant.equal (Projection.constant p) p' ->
let pb = Environ.lookup_projection p env in
let npars = pb.Declarations.proj_npars in
if Array.length args == npars + 1 then