diff --git a/builtin/Builtin.vix b/builtin/Builtin.vix
index 5194cbfc..243adabd 100644
--- a/builtin/Builtin.vix
+++ b/builtin/Builtin.vix
@@ -17,6 +17,7 @@ mulInt : Int -> Int -> Int
 subInt : Int -> Int -> Int
 
 EmptyRepresentation : Type
+PointerRepresentation : Type
 WordRepresentation : Type
 
 maxRepresentation : Type -> Type -> Type
diff --git a/src/Builtin.hs b/src/Builtin.hs
index 3fde1db5..87f22de9 100644
--- a/src/Builtin.hs
+++ b/src/Builtin.hs
@@ -100,6 +100,10 @@ pattern WordRepresentationName :: Name.Qualified
 pattern WordRepresentationName =
   "Sixten.Builtin.WordRepresentation"
 
+pattern PointerRepresentationName :: Name.Qualified
+pattern PointerRepresentationName =
+  "Sixten.Builtin.PointerRepresentation"
+
 pattern AddRepresentationName :: Name.Qualified
 pattern AddRepresentationName =
   "Sixten.Builtin.addRepresentation"
diff --git a/src/ClosureConverted/Representation2.hs b/src/ClosureConverted/Representation2.hs
index 5aaf6a37..74af9ff1 100644
--- a/src/ClosureConverted/Representation2.hs
+++ b/src/ClosureConverted/Representation2.hs
@@ -223,7 +223,7 @@ compileData env dataTypeName (Syntax.ConstructorDefinitions constructors) = do
   (boxity, maybeTags) <- fetch $ Query.ConstructorRepresentations dataTypeName
   case boxity of
     Boxed ->
-      pure $ Syntax.Global (Name.Lifted Builtin.WordRepresentationName 0)
+      pure $ Syntax.Global (Name.Lifted Builtin.PointerRepresentationName 0)
     Unboxed -> do
       compiledConstructorFields <- forM (OrderedHashMap.toList constructors) \(_, type_) -> do
         type' <- Evaluation.evaluate env type_
@@ -238,7 +238,7 @@ compileData env dataTypeName (Syntax.ConstructorDefinitions constructors) = do
         Just _ ->
           Syntax.Apply
             (Name.Lifted Builtin.AddRepresentationName 0)
-            [ Syntax.Global (Name.Lifted Builtin.WordRepresentationName 0)
+            [ Syntax.Global (Name.Lifted Builtin.IntName 0)
             , maxFieldSize
             ]
 
diff --git a/src/Lower.hs b/src/Lower.hs
index b96e6411..5d3b795e 100644
--- a/src/Lower.hs
+++ b/src/Lower.hs
@@ -146,6 +146,7 @@ mkCall = \cases
 mkLoad :: Operand -> Representation -> Value
 mkLoad = \cases
   (Global (Name.Lifted Builtin.EmptyRepresentationName 0)) _ -> Operand $ Representation mempty
+  (Global (Name.Lifted Builtin.PointerRepresentationName 0)) _ -> Operand $ Representation Representation.pointer
   (Global (Name.Lifted Builtin.UnitName 0)) _ -> Operand $ Representation mempty
   (Global (Name.Lifted Builtin.IntName 0)) _ -> Operand $ Representation Representation.int
   operand repr -> Load operand repr