diff --git a/js-assembler/assemble.rkt b/js-assembler/assemble.rkt
index 1249cec..063dced 100644
--- a/js-assembler/assemble.rkt
+++ b/js-assembler/assemble.rkt
@@ -220,7 +220,7 @@ EOF
              (assemble-label (make-Label (BasicBlock-name a-basic-block)) blockht)
              (assemble-label (make-Label (BasicBlock-name a-basic-block)) blockht))]
    [else
-    (fprintf op "var ~a=function(M){--M.cbt<0;\n"
+    (fprintf op "var ~a=function(M){\n"
              (assemble-label (make-Label (BasicBlock-name a-basic-block)) blockht))])
   (assemble-block-statements (BasicBlock-name a-basic-block)
                              (BasicBlock-stmts a-basic-block)
diff --git a/js-assembler/runtime-src/baselib-functions.js b/js-assembler/runtime-src/baselib-functions.js
index 7931a6c..e22ac93 100644
--- a/js-assembler/runtime-src/baselib-functions.js
+++ b/js-assembler/runtime-src/baselib-functions.js
@@ -300,7 +300,7 @@
         var proc = makeClosure(name,
                                arity,
                                function(M) {
-                                   --M.cbt;
+                                   M.cbt--;
                                    M.v = f(M);
                                    M.e.length -= M.a;
                                    return M.c.pop().label(M);