diff --git a/opentelemetry/src/sdk/metrics/aggregators/histogram.rs b/opentelemetry/src/sdk/metrics/aggregators/histogram.rs
index 03363f12a9..680c68ee9d 100644
--- a/opentelemetry/src/sdk/metrics/aggregators/histogram.rs
+++ b/opentelemetry/src/sdk/metrics/aggregators/histogram.rs
@@ -64,7 +64,7 @@ impl Count for HistogramAggregator {
         self.inner
             .read()
             .map_err(From::from)
-            .map(|inner| inner.state.sum.load().to_u64(&NumberKind::U64))
+            .map(|inner| inner.state.count.load().to_u64(&NumberKind::U64))
     }
 }