diff --git a/storage/metric/operation.go b/storage/metric/operation.go
index ca47d5f59..347a7e12d 100644
--- a/storage/metric/operation.go
+++ b/storage/metric/operation.go
@@ -539,7 +539,7 @@ func optimizeTimeGroup(group ops) (out ops) {
 	} else if containsRange && containsInterval {
 		out = append(out, greediestRange)
 		for _, op := range greediestIntervals {
-			if !op.Through().After(greediestRange.Through()) {
+			if !op.GreedierThan(greediestRange) {
 				continue
 			}