diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/pebble/GadgetbridgePblSupport.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/pebble/GadgetbridgePblSupport.java
index f12bba39..099fd8fc 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/pebble/GadgetbridgePblSupport.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/pebble/GadgetbridgePblSupport.java
@@ -57,7 +57,7 @@ public class GadgetbridgePblSupport {
                             byte type = (byte) ((sample & 0xe000) >>> 13);
                             byte intensity = (byte) ((sample & 0x1f80) >>> 7);
                             byte steps = (byte) (sample & 0x007f);
-                            db.addGBActivitySample(timestamp + offset_seconds, SampleProvider.PROVIDER_PEBBLE_GADGETBRIDGE, intensity, steps, type);
+                            db.addGBActivitySample(timestamp + offset_seconds, SampleProvider.PROVIDER_PEBBLE_GADGETBRIDGE, (short) (intensity & 0xff), (short) (steps & 0xff), type);
                             offset_seconds += 60;
                         }
                     } catch (GBException e) {