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-rw-r--r--src/Spec/ModularArithmetic.v2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/Spec/ModularArithmetic.v b/src/Spec/ModularArithmetic.v
index 80638ff58..95d7d4e75 100644
--- a/src/Spec/ModularArithmetic.v
+++ b/src/Spec/ModularArithmetic.v
@@ -22,7 +22,7 @@ Local Open Scope Z_scope.
Module F.
Definition F (m : BinInt.Z) := { z : BinInt.Z | z = z mod m }.
- Local Obligation Tactic := auto using Pre.Z_mod_mod.
+ Local Obligation Tactic := cbv beta; auto using Pre.Z_mod_mod.
Program Definition of_Z m (a:BinNums.Z) : F m := a mod m.
Definition to_Z {m} (a:F m) : BinNums.Z := proj1_sig a.