diff --git a/js-assembler/assemble.rkt b/js-assembler/assemble.rkt
index 54d04cb..f5d9b9b 100644
--- a/js-assembler/assemble.rkt
+++ b/js-assembler/assemble.rkt
@@ -59,7 +59,7 @@ for (param in params) {
 }
 EOF
            )
-  (fprintf op "RUNTIME.trampoline(MACHINE, ~a); })"
+  (fprintf op "MACHINE.trampoline(~a); })"
            (assemble-label (make-Label (BasicBlock-name (first basic-blocks))))))