diff --git a/remix/class0.rkt b/remix/class0.rkt
index 2d19dbc..1f6ed35 100644
--- a/remix/class0.rkt
+++ b/remix/class0.rkt
@@ -106,15 +106,16 @@
        ([cls cls-id]
         [rep rep-id]
         [cls-vtables (format-id #f "~a-vtables" #'cls)]
+        [cls-this (format-id #f "~a-this" #'cls)]
         [cls-new (format-id #f "~a-new" #'cls)]
         [cls-Current (format-id #f "~a-Current" #'cls)]
         [cls-alloc* (format-id #f "~a-alloc*" #'cls)]
         [cls-alloc (format-id #f "~a-alloc" #'cls)]
         [((int int-vtable cls-int-impl cls-int-impl-def) ...)
          (for/list ([(int int-internal) (in-dict interface-set)])
-           (define cls-int-impl (format-id #f "~a-~a" #'cls int))
+           (define cls-int-impl-id (format-id #f "~a-~a" #'cls int))
            (match-define (list int-vtable-id cls-int-impl-def)
-             (int-internal cls-int-impl))
+             (int-internal cls-int-impl-id #'cls-this))
            (list int int-vtable-id cls-int-impl cls-int-impl-def))]
         [cls-new-def (new-found? #'cls-new)])
        (syntax/loc stx
@@ -132,7 +133,7 @@
                ([Current (make-rename-transformer #'cls-Current)])
              cls-new-def
              cls-int-impl-def ...
-             ;; XXX bind cls-this
+             (remix:def (remix:#%brackets static-interface cls-this))
              (remix:def (remix:#%brackets static-interface cls)
                         (remix:#%brackets #:new cls-new)
                         (remix:#%brackets int cls-int-impl)
@@ -199,7 +200,7 @@
      (with-syntax ([int-vtable-id (interface-vtable-id (attribute int.value))]
                    [int-vtable (interface-vtable (attribute int.value))])
        (dict-set! is #'int
-                  (λ (cls-impl-id)
+                  (λ (cls-impl-id cls-this-id)
                     (list
                      #'int-vtable-id
                      (with-syntax ([cls-impl cls-impl-id])
diff --git a/remix/static-interface0.rkt b/remix/static-interface0.rkt
index cffe90d..1fe1135 100644
--- a/remix/static-interface0.rkt
+++ b/remix/static-interface0.rkt
@@ -202,6 +202,4 @@
                      static-interface?
                      static-interface-members))
 
-
-
 ;; xxx data (fixed set of interfaces)
diff --git a/remix/tests/class.rkt b/remix/tests/class.rkt
index 63ffac4..ad4e5e6 100644
--- a/remix/tests/class.rkt
+++ b/remix/tests/class.rkt
@@ -31,20 +31,16 @@
   (impl 2d<%>
     [translate
      (λ (x y)
-       {this.#:set
+       (this.#:set
         [c (this.c.#:set [x {x + this.c.x}]
-                         [y {y + this.c.y}])]})]
+                         [y {y + this.c.y}])]))]
     [area
      (λ () {3 * this.r * this.r})]))
 
 ;; XXX allow w/o #:new?, like layout
 
-;; XXX
-#;
-(def [Circle C1] (Circle.#:new 1 2 3))
-;; XXX
-#;
 (module+ test
+  (def [Circle C1] (Circle.#:new 1 2 3))
   ;; If you know something is a particular class, then you can access
   ;; its implementations directly. This is more efficient.
   {C1.Circle<%>.c.x ≡ 1}
@@ -64,8 +60,6 @@
   {C1-as-Circ.c.y ≡ 2}
   {C1-as-Circ.r ≡ 3})
 
-;; XXX
-#;
 (module+ test
   ;; Like theories, you can define functions that are generic over an
   ;; interface.