diff --git a/js-assembler/runtime-src/baselib-vectors.js b/js-assembler/runtime-src/baselib-vectors.js
index b7daaa9..b3cc0ea 100644
--- a/js-assembler/runtime-src/baselib-vectors.js
+++ b/js-assembler/runtime-src/baselib-vectors.js
@@ -59,7 +59,7 @@
     Vector.prototype.toList = function () {
         var ret = baselib.lists.EMPTY, i;
         for (i = this.length() - 1; i >= 0; i--) {
-            ret = baselib.lists.Cons.makeInstance(this.elts[i], ret);           
+            ret = baselib.lists.makePair(this.elts[i], ret);           
         }       
         return ret;
     };