diff --git a/locales/en/messages.json b/locales/en/messages.json
index 489621607c..3f6c55db38 100755
--- a/locales/en/messages.json
+++ b/locales/en/messages.json
@@ -5498,14 +5498,23 @@
     "osdDescElementAltitude": {
         "message": "Current altitude (flashes when above alarm threshold)"
     },
-    "osdTextElementAltitudeVariant1Decimal": {
-        "message": "With 1 decimal",
+    "osdTextElementAltitudeVariant1DecimalAGL": {
+        "message": "AGL with 1 decimal",
         "description": "One of the variants of the altitude element of the OSD"
     },
-    "osdTextElementAltitudeVariantNoDecimal": {
-        "message": "Without decimals",
+    "osdTextElementAltitudeVariantNoDecimalAGL": {
+        "message": "AGL without decimals",
         "description": "One of the variants of the altitude element of the OSD"
     },
+    "osdTextElementAltitudeVariant1DecimalASL": {
+        "message": "ASL with 1 decimal",
+        "description": "One of the variants of the altitude element of the OSD"
+    },
+    "osdTextElementAltitudeVariantNoDecimalASL": {
+        "message": "ASL without decimals",
+        "description": "One of the variants of the altitude element of the OSD"
+    },
+
     "osdTextElementOnTime": {
         "message": "On time",
         "description": "One of the elements of the OSD"
diff --git a/src/js/tabs/osd.js b/src/js/tabs/osd.js
index 106178b851..7445a98cc9 100644
--- a/src/js/tabs/osd.js
+++ b/src/js/tabs/osd.js
@@ -15,6 +15,7 @@ import inflection from "inflection";
 import debounce from "lodash.debounce";
 import $ from 'jquery';
 import FileSystem from "../FileSystem";
+import { have_sensor } from "../sensor_helpers";
 
 const FONT = {};
 const SYM = {};
@@ -779,8 +780,8 @@ OSD.loadDisplayFields = function() {
             draw_order: 160,
             positionable: true,
             variants: [
-                'osdTextElementAltitudeVariant1Decimal',
-                'osdTextElementAltitudeVariantNoDecimal',
+                'osdTextElementAltitudeVariant1DecimalAGL',
+                'osdTextElementAltitudeVariantNoDecimalAGL',
             ],
             preview(osdData) {
                 return OSD.generateAltitudePreview(osdData);
@@ -1513,6 +1514,11 @@ OSD.loadDisplayFields = function() {
             preview: '1:23.456',
         },
     };
+
+    if (semver.gte(FC.CONFIG.apiVersion, API_VERSION_1_47) && have_sensor(FC.CONFIG.activeSensors, 'gps')) {
+        OSD.ALL_DISPLAY_FIELDS.ALTITUDE.variants.push('osdTextElementAltitudeVariant1DecimalASL');
+        OSD.ALL_DISPLAY_FIELDS.ALTITUDE.variants.push('osdTextElementAltitudeVariantNoDecimalASL');
+    }
 };
 
 OSD.constants = {