diff --git a/android_app/app/src/main/java/com/health/openscale/core/bluetooth/BluetoothBeurerSanitas.java b/android_app/app/src/main/java/com/health/openscale/core/bluetooth/BluetoothBeurerSanitas.java
index 815ad752..2a7d791c 100644
--- a/android_app/app/src/main/java/com/health/openscale/core/bluetooth/BluetoothBeurerSanitas.java
+++ b/android_app/app/src/main/java/com/health/openscale/core/bluetooth/BluetoothBeurerSanitas.java
@@ -330,7 +330,7 @@ public class BluetoothBeurerSanitas extends BluetoothCommunication {
             int batteryLevel = (data[4] & 0xFF);
             float weightThreshold = (data[5] & 0xFF) / 10f;
             float bodyFatThreshold = (data[6] & 0xFF) / 10f;
-            int unit = data[7]; // 1 kg, 2 lb (pounds), 3 st stone
+            int unit = data[7]; // 1 kg, 2 lb (pounds), 4 st stone
             boolean userExists = (data[8] == 0);
             boolean userReferWeightExists = (data[9] == 0);
             boolean userMeasurementExist = (data[10] == 0);
diff --git a/doc/protocols/beurer.md b/doc/protocols/beurer.md
index e77c6596..b0b3579c 100644
--- a/doc/protocols/beurer.md
+++ b/doc/protocols/beurer.md
@@ -30,7 +30,7 @@ Initialization
 * `<battery>`: battery level
 * `<wthr>`: weight threshold (unit g / 100)
 * `<fthr>`: fat threshold
-* `<unit>`: 1 = kg, 2 = lb, 3 = st
+* `<unit>`: 1 = kg, 2 = lb, 4 = st
 * `<ue>, <urwe>, <ume>`: user (reference weight, measurement) exists
 * `<version>`: scale version