diff --git a/storage/metric/frontier.go b/storage/metric/frontier.go
index a1e4b579c..d6d612adb 100644
--- a/storage/metric/frontier.go
+++ b/storage/metric/frontier.go
@@ -38,6 +38,10 @@ func (f *diskFrontier) String() string {
 	return fmt.Sprintf("diskFrontier from %s at %s to %s at %s", f.firstFingerprint.ToRowKey(), f.firstSupertime, f.lastFingerprint.ToRowKey(), f.lastSupertime)
 }
 
+func (f *diskFrontier) ContainsFingerprint(fingerprint model.Fingerprint) bool {
+	return fingerprint.Less(f.firstFingerprint) || f.lastFingerprint.Less(fingerprint)
+}
+
 func newDiskFrontier(i iterator) (d *diskFrontier, err error) {
 	i.SeekToLast()
 	if i.Key() == nil {
diff --git a/storage/metric/tiered.go b/storage/metric/tiered.go
index 92f99a775..2aef30b1b 100644
--- a/storage/metric/tiered.go
+++ b/storage/metric/tiered.go
@@ -365,7 +365,7 @@ func (t *tieredStorage) renderView(viewJob viewJob) (err error) {
 		)
 
 		//		fmt.Printf("Starting scan of %s...\n", scanJob)
-		if !(t.diskFrontier == nil || scanJob.fingerprint.Less(t.diskFrontier.firstFingerprint) || t.diskFrontier.lastFingerprint.Less(scanJob.fingerprint)) {
+		if t.diskFrontier != nil || t.diskFrontier.ContainsFingerprint(scanJob.fingerprint) {
 			//			fmt.Printf("Using diskFrontier %s\n", t.diskFrontier)
 			seriesFrontier, err := newSeriesFrontier(scanJob.fingerprint, *t.diskFrontier, iterator)
 			//			fmt.Printf("Using seriesFrontier %s\n", seriesFrontier)