diff --git a/lib/6to5/transformation/transformers/other/react.js b/lib/6to5/transformation/transformers/other/react.js
index 4059af0fc7..08ccc30356 100644
--- a/lib/6to5/transformation/transformers/other/react.js
+++ b/lib/6to5/transformation/transformers/other/react.js
@@ -65,7 +65,7 @@ exports.JSXOpeningElement = {
 
     var attribs = node.attributes;
     if (attribs.length) {
-      attribs = buildJSXOpeningElementAttributes(attribs);
+      attribs = buildJSXOpeningElementAttributes(attribs, file);
     } else {
       attribs = t.literal(null);
     }
@@ -98,7 +98,7 @@ exports.JSXOpeningElement = {
  * all prior attributes to an array for later processing.
  */
 
-var buildJSXOpeningElementAttributes = function (attribs) {
+var buildJSXOpeningElementAttributes = function (attribs, file) {
   var _props = [];
   var objs = [];
 
@@ -132,7 +132,7 @@ var buildJSXOpeningElementAttributes = function (attribs) {
 
     // spread it
     attribs = t.callExpression(
-      t.memberExpression(t.identifier("React"), t.identifier("__spread")),
+      file.addHelper("extends"),
       objs
     );
   }
diff --git a/test/fixtures/transformation/react/adds-appropriate-newlines-when-using-spread-attribute/expected.js b/test/fixtures/transformation/react/adds-appropriate-newlines-when-using-spread-attribute/expected.js
index 3912b9765a..07ab7b039f 100644
--- a/test/fixtures/transformation/react/adds-appropriate-newlines-when-using-spread-attribute/expected.js
+++ b/test/fixtures/transformation/react/adds-appropriate-newlines-when-using-spread-attribute/expected.js
@@ -1,2 +1,4 @@
-React.createElement(Component, React.__spread({}, props, {
+var _extends = function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { target[key] = source[key]; } } return target; };
+
+React.createElement(Component, _extends({}, props, {
   sound: "moo" }));
diff --git a/test/fixtures/transformation/react/wraps-props-in-react-spread-for-first-spread-attributes/expected.js b/test/fixtures/transformation/react/wraps-props-in-react-spread-for-first-spread-attributes/expected.js
index f6ef0b74ea..14458d027c 100644
--- a/test/fixtures/transformation/react/wraps-props-in-react-spread-for-first-spread-attributes/expected.js
+++ b/test/fixtures/transformation/react/wraps-props-in-react-spread-for-first-spread-attributes/expected.js
@@ -1 +1,3 @@
-React.createElement(Component, React.__spread({}, x, { y: 2, z: true }));
+var _extends = function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { target[key] = source[key]; } } return target; };
+
+React.createElement(Component, _extends({}, x, { y: 2, z: true }));
diff --git a/test/fixtures/transformation/react/wraps-props-in-react-spread-for-last-spread-attributes/expected.js b/test/fixtures/transformation/react/wraps-props-in-react-spread-for-last-spread-attributes/expected.js
index a1651713c2..63e4875f71 100644
--- a/test/fixtures/transformation/react/wraps-props-in-react-spread-for-last-spread-attributes/expected.js
+++ b/test/fixtures/transformation/react/wraps-props-in-react-spread-for-last-spread-attributes/expected.js
@@ -1 +1,3 @@
-React.createElement(Component, React.__spread({ y: 2, z: true }, x));
+var _extends = function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { target[key] = source[key]; } } return target; };
+
+React.createElement(Component, _extends({ y: 2, z: true }, x));
diff --git a/test/fixtures/transformation/react/wraps-props-in-react-spread-for-middle-spread-attributes/expected.js b/test/fixtures/transformation/react/wraps-props-in-react-spread-for-middle-spread-attributes/expected.js
index 9f3084024a..7fcdfabd30 100644
--- a/test/fixtures/transformation/react/wraps-props-in-react-spread-for-middle-spread-attributes/expected.js
+++ b/test/fixtures/transformation/react/wraps-props-in-react-spread-for-middle-spread-attributes/expected.js
@@ -1 +1,3 @@
-React.createElement(Component, React.__spread({ y: 2 }, x, { z: true }));
+var _extends = function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { target[key] = source[key]; } } return target; };
+
+React.createElement(Component, _extends({ y: 2 }, x, { z: true }));