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-rw-r--r--kernel/vconv.ml4
1 files changed, 3 insertions, 1 deletions
diff --git a/kernel/vconv.ml b/kernel/vconv.ml
index 976380ede..3f9345ff8 100644
--- a/kernel/vconv.ml
+++ b/kernel/vconv.ml
@@ -203,7 +203,9 @@ let rec conv_eq env pb t1 t2 cu =
else raise NotConvertible
| Const c1, Const c2 -> eq_puniverses eq_constant c1 c2 cu
| Proj (p1,c1), Proj (p2,c2) ->
- if eq_constant p1 p2 then conv_eq env pb c1 c2 cu else raise NotConvertible
+ if eq_constant (Projection.constant p1) (Projection.constant p2) then
+ conv_eq env pb c1 c2 cu
+ else raise NotConvertible
| Ind c1, Ind c2 ->
eq_puniverses eq_ind c1 c2 cu
| Construct c1, Construct c2 ->