diff --git a/lib/gui/os/dialog/services/dialog.js b/lib/gui/os/dialog/services/dialog.js
index 1b2d0f46..7e3de5cd 100644
--- a/lib/gui/os/dialog/services/dialog.js
+++ b/lib/gui/os/dialog/services/dialog.js
@@ -57,7 +57,7 @@ module.exports = function($q, SupportedFormatsModel) {
         filters: [
           {
             name: 'OS Images',
-            extensions: SupportedFormatsModel.getAllExtensions()
+            extensions: _.sortBy(SupportedFormatsModel.getAllExtensions())
           }
         ]
       }, (files) => {