diff --git a/android_app/app/src/main/java/com/health/openscale/gui/fragments/StatisticsFragment.java b/android_app/app/src/main/java/com/health/openscale/gui/fragments/StatisticsFragment.java
index 9bdf47cc..c7f8d8f9 100644
--- a/android_app/app/src/main/java/com/health/openscale/gui/fragments/StatisticsFragment.java
+++ b/android_app/app/src/main/java/com/health/openscale/gui/fragments/StatisticsFragment.java
@@ -249,8 +249,12 @@ public class StatisticsFragment extends Fragment implements FragmentUpdateListen
             }
         }
 
-        averageWeek.divide(weekSize);
-        averageMonth.divide(monthSize);
+        if (weekSize > 0) {
+            averageWeek.divide(weekSize);
+        }
+        if (monthSize > 0) {
+            averageMonth.divide(monthSize);
+        }
 
         for (MeasurementView measurement : viewMeasurementsListWeek) {
             measurement.loadFrom(averageWeek, null);