1 files changed, 4 insertions, 4 deletions
diff --git a/contrib/ring/ArithRing.v b/contrib/ring/ArithRing.v
index 6c600e797..a2da5dd57 100644
--- a/contrib/ring/ArithRing.v
+++ b/contrib/ring/ArithRing.v
@@ -32,12 +32,12 @@ Proof.
   trivial.
 Qed.
 
-Hint Resolve nateq_prop eq2eqT: arithring.
+Hint Resolve nateq_prop: arithring.
 
 Definition NatTheory : Semi_Ring_Theory plus mult 1 0 nateq.
   split; intros; auto with arith arithring.
-  apply eq2eqT; apply (fun n m p:nat => plus_reg_l m p n) with (n := n).
-  apply eqT2eq; trivial.
+  apply (fun n m p:nat => plus_reg_l m p n) with (n := n).
+  trivial.
 Defined.
 
 
@@ -86,4 +86,4 @@ Ltac rewrite_S_to_plus :=
        change (t1 = t2) in |- *
   end.
 
-Ltac ring_nat := rewrite_S_to_plus; ring.
-\ No newline at end of file
+Ltac ring_nat := rewrite_S_to_plus; ring.