diff --git a/libs/iavl/nodedb_oec.go b/libs/iavl/nodedb_oec.go
index 4b2dc75508..373fd50305 100644
--- a/libs/iavl/nodedb_oec.go
+++ b/libs/iavl/nodedb_oec.go
@@ -77,7 +77,7 @@ func (ndb *nodeDB) setHeightOrphansItem(version int64, rootHash []byte) {
 func (ndb *nodeDB) dbGet(k []byte) ([]byte, error) {
 	ts := time.Now()
 	defer func() {
-		ndb.addDBReadTime(time.Now().Sub(ts).Microseconds())
+		ndb.addDBReadTime(time.Now().Sub(ts).Nanoseconds())
 	}()
 	ndb.addDBReadCount()
 	return ndb.db.Get(k)