diff --git a/lib/atom-beautify.js b/lib/atom-beautify.js
index 58ffb56..b12feb3 100644
--- a/lib/atom-beautify.js
+++ b/lib/atom-beautify.js
@@ -33,6 +33,7 @@ function beautify() {
       text = beautifyJS(text, beautifyOptions);
       break;
     case 'HTML':
+    case 'XML':
       text = beautifyHTML(text, beautifyOptions);
       break;
     case 'CSS':