diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/charts/HRVStatusFragment.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/charts/HRVStatusFragment.java
index 24d986c10..4942c9e3b 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/charts/HRVStatusFragment.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/charts/HRVStatusFragment.java
@@ -149,7 +149,9 @@ public class HRVStatusFragment extends AbstractChartFragment<HRVStatusFragment.H
                 lineEntries.add(new Entry(day.i, day.dayAvg));
             } else {
                 if (!lineEntries.isEmpty()) {
-                    lineDataSets.add(createDataSet(lineEntries));
+                    List<Entry> clone = new ArrayList<>(lineEntries.size());
+                    clone.addAll(lineEntries);
+                    lineDataSets.add(createDataSet(clone));
                     lineEntries.clear();
                 }
             }