diff --git a/packages/core-js/internals/export.js b/packages/core-js/internals/export.js
index 57d777641c24..f4c46c20a2e0 100644
--- a/packages/core-js/internals/export.js
+++ b/packages/core-js/internals/export.js
@@ -1,5 +1,6 @@
 var global = require('core-js-internals/global');
 var redefine = require('../internals/redefine');
+var setGlobal = require('../internals/set-global');
 
 /*
   options.target - name of the target object
@@ -18,7 +19,7 @@ module.exports = function (options, source) {
   if (options.global) {
     target = global;
   } else if (options.stat) {
-    target = global[name] || (global[name] = {});
+    target = global[name] || setGlobal(name, {});
   } else {
     target = (global[name] || {}).prototype;
   }
diff --git a/packages/core-js/internals/redefine.js b/packages/core-js/internals/redefine.js
index ab620295f85d..524708b12286 100644
--- a/packages/core-js/internals/redefine.js
+++ b/packages/core-js/internals/redefine.js
@@ -1,6 +1,7 @@
 var global = require('core-js-internals/global');
 var hide = require('../internals/hide');
 var has = require('core-js-internals/has');
+var setGlobal = require('../internals/set-global');
 var $ = require('../internals/state');
 var TO_STRING = 'toString';
 var nativeFunctionToString = Function[TO_STRING];
@@ -16,7 +17,7 @@ require('core-js-internals/shared')('inspectSource', function (it) {
     $(value, true).source = has(O, key) ? String(O[key]) : TEMPLATE.join(String(key));
   }
   if (O === global) {
-    O[key] = value;
+    setGlobal(key, value);
   } else if (!unsafe) {
     delete O[key];
     hide(O, key, value);
diff --git a/packages/core-js/internals/set-global.js b/packages/core-js/internals/set-global.js
new file mode 100644
index 000000000000..2501bae447d9
--- /dev/null
+++ b/packages/core-js/internals/set-global.js
@@ -0,0 +1,10 @@
+var global = require('core-js-internals/global');
+var hide = require('../internals/hide');
+
+module.exports = function (key, value) {
+  try {
+    hide(global, key, value);
+  } catch (e) {
+    global[key] = value;
+  } return value;
+};