diff --git a/src/go/mongolib/profiler/profiler_test.go b/src/go/mongolib/profiler/profiler_test.go
index 4dc37c75..21e4ebba 100644
--- a/src/go/mongolib/profiler/profiler_test.go
+++ b/src/go/mongolib/profiler/profiler_test.go
@@ -317,6 +317,8 @@ func TestCalcTotalStats(t *testing.T) {
 	if err != nil && !tutil.ShouldUpdateSamples() {
 		t.Fatalf("cannot load expected results: %s", err.Error())
 	}
+	want.FirstSeen = want.FirstSeen.UTC()
+	want.LastSeen = want.LastSeen.UTC()
 
 	iter := pmgomock.NewMockIterManager(ctrl)
 	gomock.InOrder(
@@ -347,6 +349,8 @@ func TestCalcTotalStats(t *testing.T) {
 				fmt.Printf("cannot update samples: %s", err.Error())
 			}
 		}
+		s.FirstSeen = s.FirstSeen.UTC()
+		s.LastSeen = s.LastSeen.UTC()
 		if !reflect.DeepEqual(s, want) {
 			t.Errorf("Invalid stats.\nGot:%#v\nWant: %#v\n", s, want)
 		}
diff --git a/src/go/mongolib/stats/stats.go b/src/go/mongolib/stats/stats.go
index 31af1e99..75e4bb36 100644
--- a/src/go/mongolib/stats/stats.go
+++ b/src/go/mongolib/stats/stats.go
@@ -101,11 +101,10 @@ func (s *Stats) Add(doc proto.SystemProfile) error {
 	qiac.NReturned = append(qiac.NReturned, float64(doc.Nreturned))
 	qiac.QueryTime = append(qiac.QueryTime, float64(doc.Millis))
 	qiac.ResponseLength = append(qiac.ResponseLength, float64(doc.ResponseLength))
-	var zeroTime time.Time
-	if qiac.FirstSeen == zeroTime || qiac.FirstSeen.After(doc.Ts) {
+	if qiac.FirstSeen.IsZero() || qiac.FirstSeen.After(doc.Ts) {
 		qiac.FirstSeen = doc.Ts
 	}
-	if qiac.LastSeen == zeroTime || qiac.LastSeen.Before(doc.Ts) {
+	if qiac.LastSeen.IsZero() || qiac.LastSeen.Before(doc.Ts) {
 		qiac.LastSeen = doc.Ts
 	}