diff --git a/core/src/main/java/io/opencensus/stats/NoopStats.java b/core/src/main/java/io/opencensus/stats/NoopStats.java
index <HASH>..<HASH> 100644
--- a/core/src/main/java/io/opencensus/stats/NoopStats.java
+++ b/core/src/main/java/io/opencensus/stats/NoopStats.java
@@ -129,7 +129,6 @@ final class NoopStats {
               existing
                   .getWindow()
                   .match(
-                      // TODO(sebright): Should we use the zero timestamp or the current time?
                       Functions.<AggregationWindowData>returnConstant(
                           CumulativeData.create(ZERO_TIMESTAMP, ZERO_TIMESTAMP)),
                       Functions.<AggregationWindowData>returnConstant(
Remove an unnecessary TODO.

Using a zero timestamp for empty views is fine for now.