diff --git a/firefox/00-proxy.yml b/firefox/00-proxy.yml
index 9d7618a..0272c72 100644
--- a/firefox/00-proxy.yml
+++ b/firefox/00-proxy.yml
@@ -1,4 +1,11 @@
 ---
 proxy_mode:
   description: Configure Proxy Access to the Internet
+  type: choice
+  choices:
+    - No proxy
+    - Auto-detect proxy settings for this network
+    - Use system proxy settings
+    - Manual proxy configuration
+    - Automatic proxy configuration URL
   default: No proxy