diff --git a/radio/src/gui/colorlcd/radio_hardware.cpp b/radio/src/gui/colorlcd/radio_hardware.cpp
index b5c264846..36f9a52c5 100644
--- a/radio/src/gui/colorlcd/radio_hardware.cpp
+++ b/radio/src/gui/colorlcd/radio_hardware.cpp
@@ -278,19 +278,29 @@ void RadioHardwarePage::build(FormWindow * window)
 
 #if defined(AUX_SERIAL)
   new StaticText(window, grid.getLabelSlot(), STR_AUX_SERIAL_MODE);
-  auto aux = new Choice(window, grid.getFieldSlot(1,0), STR_AUX_SERIAL_MODES, 0, UART_MODE_MAX, GET_SET_DEFAULT(g_eeGeneral.auxSerialMode));
-  aux->setAvailableHandler([=](int value) {
-      return isAuxModeAvailable;
-  });
+  auto aux =
+      new Choice(window, grid.getFieldSlot(1, 0), STR_AUX_SERIAL_MODES, 0,
+                 UART_MODE_MAX, GET_DEFAULT(g_eeGeneral.auxSerialMode),
+                 [](int value) {
+                   g_eeGeneral.auxSerialMode = value;
+                   auxSerialInit(g_eeGeneral.auxSerialMode, modelTelemetryProtocol());
+                   SET_DIRTY();
+                 });
+  aux->setAvailableHandler([=](int value) { return isAuxModeAvailable; });
   grid.nextLine();
 #endif
 
 #if defined(AUX2_SERIAL)
   new StaticText(window, grid.getLabelSlot(), STR_AUX2_SERIAL_MODE);
-  auto aux2 = new Choice(window, grid.getFieldSlot(1,0), STR_AUX_SERIAL_MODES, 0, UART_MODE_MAX, GET_SET_DEFAULT(g_eeGeneral.aux2SerialMode));
-  aux2->setAvailableHandler([=](int value) {
-      return isAux2ModeAvailable;
-  });
+  auto aux2 =
+      new Choice(window, grid.getFieldSlot(1, 0), STR_AUX_SERIAL_MODES, 0,
+                 UART_MODE_MAX, GET_DEFAULT(g_eeGeneral.aux2SerialMode),
+                 [](int value) {
+                   g_eeGeneral.aux2SerialMode = value;
+                   aux2SerialInit(g_eeGeneral.aux2SerialMode, modelTelemetryProtocol());
+                   SET_DIRTY();
+                 });
+  aux2->setAvailableHandler([=](int value) { return isAux2ModeAvailable; });
   grid.nextLine();
 #endif