diff --git a/src/tabs/receiver.html b/src/tabs/receiver.html
index 8c8c411075..416f0ad100 100644
--- a/src/tabs/receiver.html
+++ b/src/tabs/receiver.html
@@ -44,7 +44,7 @@
                             <span i18n="configurationSerialRX"></span>
                             <div class="note someRXTypesDisabled" i18n="someRXTypesDisabled">
                             </div>
-                            <div class="note serialRXNotSupported" i18n="serialRXNotSupported">
+                            <div class="note gui_warning serialRXNotSupported" i18n="serialRXNotSupported">
                             </div>
                         </div>
                         <div class="spiRxBox spacer_box">