diff --git a/pdb-plotting/src/main/java/org/lucares/pdb/plot/api/BarChartAggregatorForIntervals.java b/pdb-plotting/src/main/java/org/lucares/pdb/plot/api/BarChartAggregatorForIntervals.java
index a444068..e3cd661 100644
--- a/pdb-plotting/src/main/java/org/lucares/pdb/plot/api/BarChartAggregatorForIntervals.java
+++ b/pdb-plotting/src/main/java/org/lucares/pdb/plot/api/BarChartAggregatorForIntervals.java
@@ -101,7 +101,7 @@ public class BarChartAggregatorForIntervals implements CustomAggregator, Indexed
         if (maxLabels >= numberOfBuckets) {
             return true;
         } else {
-            return index % (int) Math.ceil(numberOfBuckets / maxLabels) == 0;
+            return index % (int) Math.ceil(numberOfBuckets / (double) maxLabels) == 0;
         }
     }