diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/miband/operations/FetchActivityOperation.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/miband/operations/FetchActivityOperation.java
index b526ec314..082fbfa8a 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/miband/operations/FetchActivityOperation.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/miband/operations/FetchActivityOperation.java
@@ -151,15 +151,13 @@ public class FetchActivityOperation extends AbstractMiBand1Operation {
 
     private ActivityStruct activityStruct;
 
-    public FetchActivityOperation(MiBandSupport support) {
+    public FetchActivityOperation(MiBandSupport support) throws IOException {
         super(support);
         if (support == null) {
-            LOG.error("MiBandSupport was null");
-            return;
+            throw new IOException("MiBandSupport was null");
         }
         if (support.getDeviceInfo() == null) {
-            LOG.error("MiBandSupport getDeviceInfo returned null");
-            return;
+            throw new IOException("MiBandSupport getDeviceInfo returned null");
         }
         hasExtendedActivityData = support.getDeviceInfo().supportsHeartrate();
         hasPacketCounter = support.getDeviceInfo().getProfileVersion() >= 0x02000700;