diff --git a/src/main/cli/settings.c b/src/main/cli/settings.c
index 9e6c0ddbf2..ed0c3e86b9 100644
--- a/src/main/cli/settings.c
+++ b/src/main/cli/settings.c
@@ -1715,7 +1715,7 @@ const clivalue_t valueTable[] = {
     { "vtx_channel",                VAR_UINT8  | MASTER_VALUE, .config.minmaxUnsigned = { 0, VTX_TABLE_MAX_CHANNELS }, PG_VTX_SETTINGS_CONFIG, offsetof(vtxSettingsConfig_t, channel) },
     { "vtx_power",                  VAR_UINT8  | MASTER_VALUE, .config.minmaxUnsigned = { 0, VTX_TABLE_MAX_POWER_LEVELS - 1 }, PG_VTX_SETTINGS_CONFIG, offsetof(vtxSettingsConfig_t, power) },
     { "vtx_low_power_disarm",       VAR_UINT8  | MASTER_VALUE | MODE_LOOKUP, .config.lookup = { TABLE_VTX_LOW_POWER_DISARM }, PG_VTX_SETTINGS_CONFIG, offsetof(vtxSettingsConfig_t, lowPowerDisarm) },
-    { "vtx_softserial_alt",         VAR_UINT8  | MASTER_VALUE | MODE_LOOKUP, .config.lookup = { TABLE_OFF_ON }, PG_VTX_SETTINGS_CONFIG, offsetof(vtxSettingsConfig_t, softserialAlt) },
+    { "vtx_serial_alt",             VAR_UINT8  | MASTER_VALUE | MODE_LOOKUP, .config.lookup = { TABLE_OFF_ON }, PG_VTX_SETTINGS_CONFIG, offsetof(vtxSettingsConfig_t, serialAlt) },
 #ifdef VTX_SETTINGS_FREQCMD
     { "vtx_freq",                   VAR_UINT16 | MASTER_VALUE, .config.minmaxUnsigned = { 0, VTX_SETTINGS_MAX_FREQUENCY_MHZ }, PG_VTX_SETTINGS_CONFIG, offsetof(vtxSettingsConfig_t, freq) },
     { "vtx_pit_mode_freq",          VAR_UINT16 | MASTER_VALUE, .config.minmaxUnsigned = { 0, VTX_SETTINGS_MAX_FREQUENCY_MHZ }, PG_VTX_SETTINGS_CONFIG, offsetof(vtxSettingsConfig_t, pitModeFreq) },
diff --git a/src/main/io/vtx.c b/src/main/io/vtx.c
index 57fb0d18aa..47528a2ba4 100644
--- a/src/main/io/vtx.c
+++ b/src/main/io/vtx.c
@@ -63,7 +63,11 @@ void pgResetFn_vtxSettingsConfig(vtxSettingsConfig_t *vtxSettingsConfig)
 #endif
     vtxSettingsConfig->pitModeFreq = VTX_TABLE_DEFAULT_PITMODE_FREQ;
     vtxSettingsConfig->lowPowerDisarm = VTX_LOW_POWER_DISARM_OFF;
-    vtxSettingsConfig->softserialAlt = 0;
+#ifdef AT32F4
+    vtxSettingsConfig->serialAlt = 0;
+#else
+    vtxSettingsConfig->serialAlt = 1;
+#endif
 }
 
 typedef enum {
diff --git a/src/main/io/vtx.h b/src/main/io/vtx.h
index 2ccde3c86a..537279eea8 100644
--- a/src/main/io/vtx.h
+++ b/src/main/io/vtx.h
@@ -39,7 +39,7 @@ typedef struct vtxSettingsConfig_s {
     uint16_t freq;          // sets freq in MHz if band=0
     uint16_t pitModeFreq;   // sets out-of-range pitmode frequency
     uint8_t lowPowerDisarm; // min power while disarmed, from vtxLowerPowerDisarm_e
-    uint8_t softserialAlt;  // prepend 0xff before sending frame even with SOFTSERIAL
+    uint8_t serialAlt;      // prepend 0xff before sending frame even with [SOFT]SERIAL
 } vtxSettingsConfig_t;
 
 PG_DECLARE(vtxSettingsConfig_t, vtxSettingsConfig);
diff --git a/src/main/io/vtx_smartaudio.c b/src/main/io/vtx_smartaudio.c
index df3a48fc6c..8cfcd9e760 100644
--- a/src/main/io/vtx_smartaudio.c
+++ b/src/main/io/vtx_smartaudio.c
@@ -495,15 +495,12 @@ static void saSendFrame(uint8_t *buf, int len)
         bool prepend00;
         switch (serialType(smartAudioSerialPort->identifier)) {
         case SERIALTYPE_SOFTSERIAL:
-            prepend00 = vtxSettingsConfig()->softserialAlt;
-            break;
         case SERIALTYPE_UART:
         case SERIALTYPE_LPUART: // decide HW uarts by MCU type
-#ifdef AT32F4
-            prepend00 = false;
-#else
-            prepend00 = true;
-#endif
+            // AT32F4 has a bug in the UART peripheral that causes it to
+            // not send the first byte of a transmission if the first byte
+            // is 0x00. This is not a problem for other MCUs.
+            prepend00 = vtxSettingsConfig()->serialAlt;
             break;
         default:
             prepend00 = false;