diff --git a/src/main/java/io/inscopemetrics/kairosdb/HistogramDataPointImpl.java b/src/main/java/io/inscopemetrics/kairosdb/HistogramDataPointImpl.java
index 085eb30..d773a01 100644
--- a/src/main/java/io/inscopemetrics/kairosdb/HistogramDataPointImpl.java
+++ b/src/main/java/io/inscopemetrics/kairosdb/HistogramDataPointImpl.java
@@ -233,7 +233,7 @@ public long getOriginalCount() {
      */
     @Override
     public long getSampleCount() {
-        int count = 0;
+        long count = 0;
         for (Integer binSamples : map.values()) {
             count += binSamples;
         }