diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/sony/headphones/protocol/impl/v1/SonyProtocolImplV1.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/sony/headphones/protocol/impl/v1/SonyProtocolImplV1.java
index 500405d5f..7f9206d0f 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/sony/headphones/protocol/impl/v1/SonyProtocolImplV1.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/sony/headphones/protocol/impl/v1/SonyProtocolImplV1.java
@@ -1295,6 +1295,7 @@ public class SonyProtocolImplV1 extends AbstractSonyProtocolImpl {
             case SINGLE:
                 return 0x00;
             case DUAL:
+            case DUAL2: // FIXME this is a workaround to fix the initialization - DUAL2 is not supported by V1
                 return 0x01;
             case CASE:
                 return 0x02;