diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/miband/AbstractMiBandFWHelper.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/miband/AbstractMiBandFWHelper.java
index 105c31262..7f0837a79 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/miband/AbstractMiBandFWHelper.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/miband/AbstractMiBandFWHelper.java
@@ -20,14 +20,16 @@ package nodomain.freeyourgadget.gadgetbridge.devices.miband;
 import android.content.Context;
 import android.net.Uri;
 
+import androidx.annotation.NonNull;
+
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import java.io.BufferedInputStream;
 import java.io.IOException;
 import java.io.InputStream;
+import java.util.Locale;
 
-import androidx.annotation.NonNull;
 import nodomain.freeyourgadget.gadgetbridge.GBApplication;
 import nodomain.freeyourgadget.gadgetbridge.R;
 import nodomain.freeyourgadget.gadgetbridge.impl.GBDevice;
@@ -74,10 +76,12 @@ public abstract class AbstractMiBandFWHelper {
     public abstract int getFirmware2Version();
 
     public static String formatFirmwareVersion(int version) {
-        if (version == -1)
+        if (version == -1) {
             return GBApplication.getContext().getString(R.string._unknown_);
+        }
 
-        return String.format("%d.%d.%d.%d",
+        return String.format(Locale.UK,
+                "%d.%d.%d.%d",
                 version >> 24 & 255,
                 version >> 16 & 255,
                 version >> 8 & 255,