diff --git a/GBDaoGenerator/src/nodomain/freeyourgadget/gadgetbridge/daogen/GBDaoGenerator.java b/GBDaoGenerator/src/nodomain/freeyourgadget/gadgetbridge/daogen/GBDaoGenerator.java
index 13868d787..f9a0a697e 100644
--- a/GBDaoGenerator/src/nodomain/freeyourgadget/gadgetbridge/daogen/GBDaoGenerator.java
+++ b/GBDaoGenerator/src/nodomain/freeyourgadget/gadgetbridge/daogen/GBDaoGenerator.java
@@ -15,8 +15,6 @@
  */
 package nodomain.freeyourgadget.gadgetbridge.daogen;
 
-import java.util.Date;
-
 import de.greenrobot.daogenerator.DaoGenerator;
 import de.greenrobot.daogenerator.Entity;
 import de.greenrobot.daogenerator.Index;
@@ -45,7 +43,7 @@ public class GBDaoGenerator {
 
 
     public static void main(String[] args) throws Exception {
-        Schema schema = new Schema(21, MAIN_PACKAGE + ".entities");
+        Schema schema = new Schema(22, MAIN_PACKAGE + ".entities");
 
         Entity userAttributes = addUserAttributes(schema);
         Entity user = addUserInfo(schema, userAttributes);
@@ -378,6 +376,7 @@ public class GBDaoGenerator {
         );
         alarm.addIntProperty("hour").notNull();
         alarm.addIntProperty("minute").notNull();
+        alarm.addBooleanProperty("unused").notNull();
         alarm.addToOne(user, userId);
         alarm.addToOne(device, deviceId);
     }
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/ConfigureAlarms.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/ConfigureAlarms.java
index 6293cb03c..de8f4c31a 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/ConfigureAlarms.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/ConfigureAlarms.java
@@ -21,14 +21,15 @@ import android.content.Intent;
 import android.os.Bundle;
 import android.view.MenuItem;
 
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import java.util.List;
 
-import androidx.annotation.NonNull;
-import androidx.recyclerview.widget.LinearLayoutManager;
-import androidx.recyclerview.widget.RecyclerView;
 import nodomain.freeyourgadget.gadgetbridge.GBApplication;
 import nodomain.freeyourgadget.gadgetbridge.R;
 import nodomain.freeyourgadget.gadgetbridge.adapter.GBAlarmListAdapter;
@@ -136,7 +137,7 @@ public class ConfigureAlarms extends AbstractGBActivity {
     }
 
     private Alarm createDefaultAlarm(@NonNull Device device, @NonNull User user, int position) {
-        return new Alarm(device.getId(), user.getId(), position, false, false,0, 6, 30);
+        return new Alarm(device.getId(), user.getId(), position, false, false, 0, 6, 30, false);
     }
 
     @Override
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/adapter/GBAlarmListAdapter.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/adapter/GBAlarmListAdapter.java
index 07500a8b4..7725d1bf2 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/adapter/GBAlarmListAdapter.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/adapter/GBAlarmListAdapter.java
@@ -27,12 +27,13 @@ import android.widget.CompoundButton;
 import android.widget.Switch;
 import android.widget.TextView;
 
-import java.util.ArrayList;
-import java.util.List;
-
 import androidx.annotation.NonNull;
 import androidx.cardview.widget.CardView;
 import androidx.recyclerview.widget.RecyclerView;
+
+import java.util.ArrayList;
+import java.util.List;
+
 import nodomain.freeyourgadget.gadgetbridge.R;
 import nodomain.freeyourgadget.gadgetbridge.activities.ConfigureAlarms;
 import nodomain.freeyourgadget.gadgetbridge.database.DBHelper;
@@ -71,7 +72,7 @@ public class GBAlarmListAdapter extends RecyclerView.Adapter<GBAlarmListAdapter.
     }
 
     @Override
-    public void onBindViewHolder(@NonNull ViewHolder holder, final int position) {
+    public void onBindViewHolder(@NonNull final ViewHolder holder, final int position) {
 
         final Alarm alarm = alarmList.get(position);
 
@@ -82,7 +83,7 @@ public class GBAlarmListAdapter extends RecyclerView.Adapter<GBAlarmListAdapter.
         holder.alarmDayFriday.setChecked(alarm.getRepetition(Alarm.ALARM_FRI));
         holder.alarmDaySaturday.setChecked(alarm.getRepetition(Alarm.ALARM_SAT));
         holder.alarmDaySunday.setChecked(alarm.getRepetition(Alarm.ALARM_SUN));
-
+        holder.container.setAlpha(alarm.getUnused() ? 0.5f : 1.0f);
         holder.isEnabled.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
             @Override
             public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
@@ -97,6 +98,16 @@ public class GBAlarmListAdapter extends RecyclerView.Adapter<GBAlarmListAdapter.
                 ((ConfigureAlarms) mContext).configureAlarm(alarm);
             }
         });
+        holder.container.setOnLongClickListener(new View.OnLongClickListener() {
+            @Override
+            public boolean onLongClick(View v) {
+                alarm.setUnused(!alarm.getUnused());
+                holder.container.setAlpha(alarm.getUnused() ? 0.5f : 1.0f);
+                updateInDB(alarm);
+                return true;
+            }
+        });
+
         holder.alarmTime.setText(DateTimeUtils.formatTime(alarm.getHour(), alarm.getMinute()));
         holder.isEnabled.setChecked(alarm.getEnabled());
         if (alarm.getSmartWakeup()) {
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/database/schema/GadgetbridgeUpdate_22.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/database/schema/GadgetbridgeUpdate_22.java
new file mode 100644
index 000000000..e7afb1724
--- /dev/null
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/database/schema/GadgetbridgeUpdate_22.java
@@ -0,0 +1,39 @@
+/*  Copyright (C) 2019 Andreas Shimokawa
+
+    This file is part of Gadgetbridge.
+
+    Gadgetbridge is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Gadgetbridge is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
+package nodomain.freeyourgadget.gadgetbridge.database.schema;
+
+import android.database.sqlite.SQLiteDatabase;
+
+import nodomain.freeyourgadget.gadgetbridge.database.DBHelper;
+import nodomain.freeyourgadget.gadgetbridge.database.DBUpdateScript;
+import nodomain.freeyourgadget.gadgetbridge.entities.AlarmDao;
+import nodomain.freeyourgadget.gadgetbridge.entities.No1F1ActivitySampleDao;
+
+public class GadgetbridgeUpdate_22 implements DBUpdateScript {
+    @Override
+    public void upgradeSchema(SQLiteDatabase db) {
+        if (!DBHelper.existsColumn(AlarmDao.TABLENAME, AlarmDao.Properties.Unused.columnName, db)) {
+            String ADD_COLUMN_UNUSED = "ALTER TABLE " + AlarmDao.TABLENAME + " ADD COLUMN "
+                    + AlarmDao.Properties.Unused.columnName + " INTEGER NOT NULL DEFAULT 0;";
+            db.execSQL(ADD_COLUMN_UNUSED);
+        }
+    }
+
+    @Override
+    public void downgradeSchema(SQLiteDatabase db) {
+    }
+}
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/model/Alarm.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/model/Alarm.java
index 5a4c22d3d..5805d3072 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/model/Alarm.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/model/Alarm.java
@@ -37,6 +37,8 @@ public interface Alarm extends Serializable {
 
     boolean getEnabled();
 
+    boolean getUnused();
+
     boolean getSmartWakeup();
 
     int getRepetition();
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/huami/HuamiSupport.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/huami/HuamiSupport.java
index ef827101e..5af18112f 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/huami/HuamiSupport.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/huami/HuamiSupport.java
@@ -1487,13 +1487,17 @@ public class HuamiSupport extends AbstractBTLEDeviceSupport {
         }
 
         int base = 0;
-        if (alarm.getEnabled()) {
+        int daysMask = 0;
+        if (alarm.getEnabled() && !alarm.getUnused()) {
             base = 128;
         }
-        int daysMask = alarm.getRepetition();
-        if (!alarm.isRepetitive()) {
-            daysMask = 128;
+        if (!alarm.getUnused()) {
+            daysMask = alarm.getRepetition();
+            if (!alarm.isRepetitive()) {
+                daysMask = 128;
+            }
         }
+
         byte[] alarmMessage = new byte[] {
                 (byte) 0x2, // TODO what is this?
                 (byte) (base + alarm.getPosition()), // 128 is the base, alarm slot is added
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/AlarmUtils.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/AlarmUtils.java
index 22b9e9e8c..47a6bc46a 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/AlarmUtils.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/AlarmUtils.java
@@ -48,7 +48,7 @@ public class AlarmUtils {
      * @return
      */
     public static nodomain.freeyourgadget.gadgetbridge.model.Alarm createSingleShot(int index, boolean smartWakeup, Calendar calendar) {
-        return new Alarm(-1, -1, index, true, smartWakeup, Alarm.ALARM_ONCE, calendar.get(Calendar.HOUR_OF_DAY), calendar.get(Calendar.MINUTE));
+        return new Alarm(-1, -1, index, true, smartWakeup, Alarm.ALARM_ONCE, calendar.get(Calendar.HOUR_OF_DAY), calendar.get(Calendar.MINUTE), false);
     }
 
     /**
@@ -127,7 +127,7 @@ public class AlarmUtils {
         int hour = Integer.parseInt(tokens[4]);
         int minute = Integer.parseInt(tokens[5]);
 
-        return new Alarm(device.getId(), user.getId(), index, enabled, smartWakeup, repetition, hour, minute);
+        return new Alarm(device.getId(), user.getId(), index, enabled, smartWakeup, repetition, hour, minute, false);
     }
 
     private static Comparator<Alarm> createComparator() {