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-rw-r--r--src/Util/IdfunWithAlt.v3
1 files changed, 1 insertions, 2 deletions
diff --git a/src/Util/IdfunWithAlt.v b/src/Util/IdfunWithAlt.v
index 9754c5b24..09bb2ca76 100644
--- a/src/Util/IdfunWithAlt.v
+++ b/src/Util/IdfunWithAlt.v
@@ -34,8 +34,7 @@ Definition id_tuple_with_alt {A n}
| O => id_with_alt
| S n' => id_tuple'_with_alt
end.
-Fixpoint id_tuple_with_alt_proof {A n}
- {struct n}
+Definition id_tuple_with_alt_proof {A n}
: forall (value value_for_alt : tuple A n) {pf : value = value_for_alt},
tuple A n
:= match n with