diff --git a/packages/babel-plugin-transform-es2015-modules-commonjs/test/fixtures/spec/export-default-func-hoisting/expected.js b/packages/babel-plugin-transform-es2015-modules-commonjs/test/fixtures/spec/export-default-func-hoisting/expected.js
index d24d24791e39..2bacdc7c2267 100644
--- a/packages/babel-plugin-transform-es2015-modules-commonjs/test/fixtures/spec/export-default-func-hoisting/expected.js
+++ b/packages/babel-plugin-transform-es2015-modules-commonjs/test/fixtures/spec/export-default-func-hoisting/expected.js
@@ -36,13 +36,7 @@ const _bar = babelHelpers.specRequireInterop(require('bar'));
 
 Object.keys(_bar).forEach(function (key) {
   if (key === "__esModule" || key === "default" || _ownExports.indexOf(key) >= 0) return;
-
-  if (key in exports) {
-    var own = exports[key],
-        other = _bar[key];
-    if (own === other ? own !== 0 || 1 / own === 1 / other : own != own && other != other) return;
-  }
-
+  if (key in exports && babelHelpers.sameValue(exports[key], _bar[key])) return;
   Object.defineProperty(exports, key, {
     enumerable: true,
 
diff --git a/packages/babel-plugin-transform-es2015-modules-commonjs/test/fixtures/spec/reexports/expected.js b/packages/babel-plugin-transform-es2015-modules-commonjs/test/fixtures/spec/reexports/expected.js
index f15a403de471..11c61e6ebbf7 100644
--- a/packages/babel-plugin-transform-es2015-modules-commonjs/test/fixtures/spec/reexports/expected.js
+++ b/packages/babel-plugin-transform-es2015-modules-commonjs/test/fixtures/spec/reexports/expected.js
@@ -55,13 +55,7 @@ const _iDontKnow = babelHelpers.specRequireInterop(require('./i-dont-know'));
 
 Object.keys(_iDontKnow).forEach(function (key) {
   if (key === "__esModule" || key === "default" || _ownExports.indexOf(key) >= 0) return;
-
-  if (key in exports) {
-    var own = exports[key],
-        other = _iDontKnow[key];
-    if (own === other ? own !== 0 || 1 / own === 1 / other : own != own && other != other) return;
-  }
-
+  if (key in exports && babelHelpers.sameValue(exports[key], _iDontKnow[key])) return;
   Object.defineProperty(exports, key, {
     enumerable: true,