diff --git a/src/bindable-property.js b/src/bindable-property.js
index 5d5a4d93..502b2cfb 100644
--- a/src/bindable-property.js
+++ b/src/bindable-property.js
@@ -1,4 +1,4 @@
-import core from 'core-js';
+import * as core from 'core-js';
 import {hyphenate} from './util';
 import {bindingMode} from 'aurelia-binding';
 
diff --git a/src/content-selector.js b/src/content-selector.js
index c2d1faa7..1fcddd10 100644
--- a/src/content-selector.js
+++ b/src/content-selector.js
@@ -1,4 +1,4 @@
-import core from 'core-js';
+import * as core from 'core-js';
 
 if (Element && !Element.prototype.matches) {
     var proto = Element.prototype;
diff --git a/src/decorators.js b/src/decorators.js
index 2ba6a5e9..3077e5b1 100644
--- a/src/decorators.js
+++ b/src/decorators.js
@@ -1,4 +1,4 @@
-import core from 'core-js';
+import * as core from 'core-js';
 import {Metadata, Decorators} from 'aurelia-metadata';
 import {BindableProperty} from './bindable-property';
 import {ChildObserver} from './children';
diff --git a/src/view-engine.js b/src/view-engine.js
index 45da8ea8..19aa1948 100644
--- a/src/view-engine.js
+++ b/src/view-engine.js
@@ -1,4 +1,4 @@
-import core from 'core-js';
+import * as core from 'core-js';
 import * as LogManager from 'aurelia-logging';
 import {Origin} from 'aurelia-metadata';
 import {Loader,TemplateRegistryEntry} from 'aurelia-loader';