diff --git a/extensions/guacamole-auth-radius/src/main/resources/styles/radius.css b/extensions/guacamole-auth-radius/src/main/resources/styles/radius.css
index 00d7988fa..92cb48ae9 100644
--- a/extensions/guacamole-auth-radius/src/main/resources/styles/radius.css
+++ b/extensions/guacamole-auth-radius/src/main/resources/styles/radius.css
@@ -37,7 +37,3 @@
 .radius-challenge-response-field input[type="submit"] {
     display: none !important;
 }
-
-.radius-challenge-response-field.loading iframe {
-    opacity: 0;
-}