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-rw-r--r--plugins/setoid_ring/Ring_polynom.v1
-rw-r--r--plugins/setoid_ring/Ring_theory.v1
2 files changed, 2 insertions, 0 deletions
diff --git a/plugins/setoid_ring/Ring_polynom.v b/plugins/setoid_ring/Ring_polynom.v
index faa83dedc2..dc47e9686d 100644
--- a/plugins/setoid_ring/Ring_polynom.v
+++ b/plugins/setoid_ring/Ring_polynom.v
@@ -13,6 +13,7 @@ Require Import BinPos.
Require Import BinNat.
Require Import BinInt.
Require Export Ring_theory.
+Import Morphisms. (* For Hints *)
Open Local Scope positive_scope.
Import RingSyntax.
diff --git a/plugins/setoid_ring/Ring_theory.v b/plugins/setoid_ring/Ring_theory.v
index b3250a510f..028804bb6d 100644
--- a/plugins/setoid_ring/Ring_theory.v
+++ b/plugins/setoid_ring/Ring_theory.v
@@ -9,6 +9,7 @@
Require Import Setoid.
Require Import BinPos.
Require Import BinNat.
+Import Morphisms. (* For Hints *)
Set Implicit Arguments.