diff --git a/numass-storage/src/main/java/inr/numass/storage/NMPoint.java b/numass-storage/src/main/java/inr/numass/storage/NMPoint.java
index 519ee60c..5ed51e5f 100644
--- a/numass-storage/src/main/java/inr/numass/storage/NMPoint.java
+++ b/numass-storage/src/main/java/inr/numass/storage/NMPoint.java
@@ -138,12 +138,12 @@ public class NMPoint {
     }
 
     /**
-     * Events count - overflow
+     * Events count + overflow
      *
      * @return
      */
     public long getEventsCount() {
-        return eventsCount - getOverflow();
+        return eventsCount + getOverflow();
     }
 
     public List<DataPoint> getData(int binning, boolean normalize) {