diff --git a/ops/nixos/bvm-radius/raddb/proxy.conf b/ops/nixos/bvm-radius/raddb/proxy.conf
index fcf5232c70..6acc97594d 100644
--- a/ops/nixos/bvm-radius/raddb/proxy.conf
+++ b/ops/nixos/bvm-radius/raddb/proxy.conf
@@ -6,6 +6,7 @@ home_server eduroam_flr_server_1 {
         response_window = 5
         check_interval = 10
         check_timeout = 5
+        require_message_authenticator = yes
 }
 home_server eduroam_flr_server_2 {
 	# roaming1.ja.net
@@ -15,6 +16,7 @@ home_server eduroam_flr_server_2 {
         response_window = 5
         check_interval = 10
         check_timeout = 5
+        require_message_authenticator = yes
 }
 
 home_server_pool eduroam_flr_pool {