diff --git a/aio/content/guide/elements.md b/aio/content/guide/elements.md
index d94adc663f..f7dfa98f12 100644
--- a/aio/content/guide/elements.md
+++ b/aio/content/guide/elements.md
@@ -2,7 +2,7 @@
 
 _Angular elements_ are Angular components packaged as _custom elements_, a web standard for defining new HTML elements in a framework-agnostic way.
 
-[Custom elements](https://developer.mozilla.org/en-US/docs/Web/Web_Components/Using_custom_elements) are a Web Platform feature currently supported by Chrome, Opera, and Safari, and available in other browsers through polyfills (see [Browser Support](#browser-support)).
+[Custom elements](https://developer.mozilla.org/en-US/docs/Web/Web_Components/Using_custom_elements) are a Web Platform feature currently supported by Chrome, Firefox, Opera, and Safari, and available in other browsers through polyfills (see [Browser Support](#browser-support)).
 A custom element extends HTML by allowing you to define a tag whose content is created and controlled by JavaScript code.
 The browser maintains a `CustomElementRegistry` of defined custom elements (also called Web Components), which maps an instantiable JavaScript class to an HTML tag.