diff --git a/companion/src/firmwares/opentx/opentxeeprom.cpp b/companion/src/firmwares/opentx/opentxeeprom.cpp
index 4866444cc..1dbfaa7e8 100644
--- a/companion/src/firmwares/opentx/opentxeeprom.cpp
+++ b/companion/src/firmwares/opentx/opentxeeprom.cpp
@@ -1914,7 +1914,7 @@ class SensorField: public TransformedField {
       if (sensor.type == SensorData::TELEM_TYPE_CUSTOM) {
         _id = sensor.id;
         _subid = sensor.subid;
-        _instance = (sensor.instance & 0x1F) | (sensor.rxIdx << 5) | (sensor.moduleIdx << 7);
+        _instance = ((sensor.instance - 1) & 0x1F) | (sensor.rxIdx << 5) | (sensor.moduleIdx << 7);
         _ratio = sensor.ratio;
         _offset = sensor.offset;
       }
@@ -1942,12 +1942,12 @@ class SensorField: public TransformedField {
           sensor.id = _id;
           sensor.subid = _subid;
           if (model.moduleData[0].isPxx1Module() || model.moduleData[1].isPxx1Module()) {
-            sensor.instance = (_instance & 0x1F) + (version <= 218 ? -1 : 0); // 5 bits instance
+            sensor.instance = (_instance & 0x1F) + (version <= 218 ? 0 : 1); // 5 bits instance
             sensor.rxIdx = 0x03;    // 2 bits Rx idx
             sensor.moduleIdx = 0x01; // 1 bit module idx
           }
           else {
-            sensor.instance = _instance & 0x1F;
+            sensor.instance = (_instance & 0x1F) + 1;
             sensor.rxIdx = (_instance >> 5) & 0x03;    // 2 bits Rx idx
             sensor.moduleIdx = (_instance >> 7) & 0x1; // 1 bit module idx
           }
diff --git a/radio/src/gui/128x64/model_telemetry_sensor.cpp b/radio/src/gui/128x64/model_telemetry_sensor.cpp
index f5870f230..d8a63079e 100644
--- a/radio/src/gui/128x64/model_telemetry_sensor.cpp
+++ b/radio/src/gui/128x64/model_telemetry_sensor.cpp
@@ -104,7 +104,7 @@ void menuModelSensor(event_t event)
         if (sensor->type == TELEM_TYPE_CUSTOM) {
           lcdDrawTextAlignedLeft(y, STR_ID);
           lcdDrawHexNumber(SENSOR_2ND_COLUMN, y, sensor->id, LEFT|(menuHorizontalPosition==0 ? attr : 0));
-          lcdDrawHexChar(SENSOR_3RD_COLUMN, y, sensor->instance & 0x1f, LEFT|(menuHorizontalPosition==1 ? attr : 0));
+          lcdDrawHexChar(SENSOR_3RD_COLUMN, y, (sensor->instance & 0x1F) + 1, LEFT|(menuHorizontalPosition==1 ? attr : 0));
           if (attr && s_editMode > 0) {
             switch (menuHorizontalPosition) {
               case 0:
diff --git a/radio/src/gui/212x64/model_telemetry_sensor.cpp b/radio/src/gui/212x64/model_telemetry_sensor.cpp
index 4321f87c3..27e6cd93c 100644
--- a/radio/src/gui/212x64/model_telemetry_sensor.cpp
+++ b/radio/src/gui/212x64/model_telemetry_sensor.cpp
@@ -114,7 +114,7 @@ void menuModelSensor(event_t event)
         if (sensor->type == TELEM_TYPE_CUSTOM) {
           lcdDrawTextAlignedLeft(y, STR_ID);
           lcdDrawHexNumber(SENSOR_2ND_COLUMN, y, sensor->id, LEFT|(menuHorizontalPosition==0 ? attr : 0));
-          lcdDrawNumber(SENSOR_3RD_COLUMN, y, sensor->instance, LEFT|(menuHorizontalPosition==1 ? attr : 0));
+          lcdDrawNumber(SENSOR_3RD_COLUMN, y, (sensor->instance  & 0x1F) + 1, LEFT|(menuHorizontalPosition==1 ? attr : 0));
           if (attr) {
             switch (menuHorizontalPosition) {
               case 0:
diff --git a/radio/src/gui/480x272/model_telemetry_sensor.cpp b/radio/src/gui/480x272/model_telemetry_sensor.cpp
index 150d3e365..3c23b96af 100644
--- a/radio/src/gui/480x272/model_telemetry_sensor.cpp
+++ b/radio/src/gui/480x272/model_telemetry_sensor.cpp
@@ -115,7 +115,7 @@ bool menuModelSensor(event_t event)
         if (sensor->type == TELEM_TYPE_CUSTOM) {
           lcdDrawText(MENUS_MARGIN_LEFT, y, STR_ID);
           lcdDrawHexNumber(SENSOR_2ND_COLUMN, y, sensor->id, LEFT|(menuHorizontalPosition==0 ? attr : 0));
-          lcdDrawNumber(SENSOR_3RD_COLUMN, y, sensor->instance, LEFT|(menuHorizontalPosition==1 ? attr : 0));
+          lcdDrawNumber(SENSOR_3RD_COLUMN, y, (sensor->instance & 0x1F) + 1, LEFT|(menuHorizontalPosition==1 ? attr : 0));
           if (attr) {
             switch (menuHorizontalPosition) {
               case 0: