diff --git a/android/gatt.c b/android/gatt.c
index e425d61..9b51ab1 100644
--- a/android/gatt.c
+++ b/android/gatt.c
@@ -3470,6 +3470,8 @@ static uint8_t handle_test_command_read(bdaddr_t *bdaddr, bt_uuid_t *uuid,
 		length = enc_read_blob_req(u2, u3, pdu, mtu);
 		break;
 	case ATT_OP_READ_BY_GROUP_REQ:
+		length = enc_read_by_grp_req(u2, u3, uuid, pdu, mtu);
+		break;
 	case ATT_OP_READ_MULTI_REQ:
 	default:
 		error("gatt: Unknown read type");