diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/pebble/PebbleProtocol.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/pebble/PebbleProtocol.java
index 8b27479c7..fc1091930 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/pebble/PebbleProtocol.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/pebble/PebbleProtocol.java
@@ -679,12 +679,11 @@ public class PebbleProtocol extends GBDeviceProtocol {
     public byte[] encodeActivateHealth(boolean activate) {
         byte[] blob;
         byte command;
+        command = BLOBDB_INSERT;
         if (activate) {
-            command = BLOBDB_INSERT;
             blob = new byte[]{0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x02};
         } else {
-            command = BLOBDB_DELETE;
-            blob = null;
+            blob = new byte[]{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
         }
         return encodeBlobdb("activityPreferences", command, BLOBDB_HEALTH, blob);
     }