diff --git a/dhall/src/Dhall/Eval.hs b/dhall/src/Dhall/Eval.hs
index 6e97ece6f..0e29b118a 100644
--- a/dhall/src/Dhall/Eval.hs
+++ b/dhall/src/Dhall/Eval.hs
@@ -252,26 +252,6 @@ data Val a
 -- | For use with "Text.Show.Functions".
 deriving instance (Show a, Show (Val a -> Val a)) => Show (Val a)
 
-valEq :: Val a -> Val a -> Bool
-valEq (VConst x1) (VConst x2) = x1 == x2
-valEq (VVar t1 i1) (VVar t2 i2) = t1 == t2 && i1 == i2
-valEq VPrimVar VPrimVar = True
-valEq (VApp f1 x1) (VApp f2 x2) = valEq f1 f2 && valEq x1 x2
-valEq VBool VBool = True
-valEq (VBoolLit x1) (VBoolLit x2) = x1 == x2
-valEq (VBytesLit x1) (VBytesLit x2) = x1 == x2
-valEq (VNaturalLit x1) (VNaturalLit x2) = x1 == x2
-valEq (VNaturalFold t1 x1 y1 z1) (VNaturalFold t2 x2 y2 z2) = valEq t1 t2 && valEq x1 x2 && valEq y1 y2 && valEq z1 z2
-valEq (VNaturalIsZero x1) (VNaturalIsZero x2) = valEq x1 x2
-valEq (VIntegerLit x1) (VIntegerLit x2) = x1 == x2
-valEq (VDoubleLit x1) (VDoubleLit x2) = x1 == x2
-valEq (VList _) (VList _) = True
-valEq (VListLit _ x1) (VListLit _ x2) = all (uncurry valEq) (zip (toList x1) (toList x2))
-valEq (VSome x1) (VSome x2) = valEq x1 x2
-valEq (VNone _) (VNone _) = True
-valEq (VRecordLit x1) (VRecordLit x2) = (length x1 == length x2) && (all (uncurry valEq) (zip (Map.elems x1) (Map.elems x2)))
-valEq _ _ = False
-
 (~>) :: Val a -> Val a -> Val a
 (~>) a b = VHPi "_" a (\_ -> b)
 {-# INLINE (~>) #-}
@@ -551,7 +531,7 @@ eval !env t0 =
                                   go !acc 0 = acc
                                   go acc m =
                                     let next = vApp succ acc in
-                                    if valEq next acc then acc else go next (m - 1)
+                                    if conv env next acc then acc else go next (m - 1)
                             _ -> inert
         NaturalBuild ->
             VPrim $ \case