diff --git a/packages/babel-plugin-transform-es2015-parameters/test/fixtures/parameters/default-rest/expected.js b/packages/babel-plugin-transform-es2015-parameters/test/fixtures/parameters/default-rest/expected.js
index f74dcedeed..852967ef85 100644
--- a/packages/babel-plugin-transform-es2015-parameters/test/fixtures/parameters/default-rest/expected.js
+++ b/packages/babel-plugin-transform-es2015-parameters/test/fixtures/parameters/default-rest/expected.js
@@ -1,21 +1,21 @@
 var a = 1;
 function rest() {
-  var b = arguments.length <= 0 || arguments[0] === undefined ? a : arguments[0];
+  var b = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : a;
 
   assert.equal(b, 1);
 }
 rest(undefined, 2);
 
 function rest2() {
-  var b = arguments.length <= 0 || arguments[0] === undefined ? a : arguments[0];
+  var b = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : a;
 
   assert.equal(arguments.length <= 1 ? undefined : arguments[1], 2);
 }
 rest2(undefined, 2);
 
 function rest3() {
-  var b = arguments.length <= 0 || arguments[0] === undefined ? a : arguments[0];
+  var b = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : a;
 
-  assert.equal(arguments.length - 1, 1);
+  assert.equal(arguments.length <= 1 ? 0 : arguments.length - 1, 1);
 }
 rest3(undefined, 2);