diff --git a/flowrate/io_test.go b/flowrate/io_test.go
index fa7f4b4..e6a78ad 100644
--- a/flowrate/io_test.go
+++ b/flowrate/io_test.go
@@ -6,11 +6,12 @@ package flowrate
 
 import (
 	"bytes"
-	"reflect"
 	"testing"
 	"time"
 )
 
+const statusTimeTolerance = 25 * time.Millisecond
+
 const (
 	_50ms  = 50 * time.Millisecond
 	_100ms = 100 * time.Millisecond
@@ -31,6 +32,37 @@ func nextStatus(m *Monitor) Status {
 	return m.Status()
 }
 
+func statusEqual(got, want Status) bool {
+	if got.Start != want.Start || got.Active != want.Active ||
+		got.Bytes != want.Bytes || got.Samples != want.Samples ||
+		got.BytesRem != want.BytesRem || got.Progress != want.Progress {
+		return false
+	}
+	if absDuration(got.Duration-want.Duration) > statusTimeTolerance ||
+		absDuration(got.Idle-want.Idle) > statusTimeTolerance ||
+		absDuration(got.TimeRem-want.TimeRem) > statusTimeTolerance {
+		return false
+	}
+	return absInt(got.InstRate-want.InstRate) <= 10 &&
+		absInt(got.CurRate-want.CurRate) <= 15 &&
+		absInt(got.AvgRate-want.AvgRate) <= 15 &&
+		absInt(got.PeakRate-want.PeakRate) <= 10
+}
+
+func absDuration(d time.Duration) time.Duration {
+	if d < 0 {
+		return -d
+	}
+	return d
+}
+
+func absInt(v int64) int64 {
+	if v < 0 {
+		return -v
+	}
+	return v
+}
+
 func TestReader(t *testing.T) {
 	in := make([]byte, 100)
 	for i := range in {
@@ -90,7 +122,7 @@ func TestReader(t *testing.T) {
 		Status{false, start, _300ms, 0, 20, 3, 0, 0, 67, 100, 0, 0, 0},
 	}
 	for i, s := range status {
-		if !reflect.DeepEqual(&s, &want[i]) {
+		if !statusEqual(s, want[i]) {
 			t.Errorf("r.Status(%v) expected %v; got %v", i, want[i], s)
 		}
 	}
@@ -136,7 +168,7 @@ func TestWriter(t *testing.T) {
 		Status{true, start, _500ms, _100ms, 100, 5, 200, 200, 200, 200, 0, 0, 100000},
 	}
 	for i, s := range status {
-		if !reflect.DeepEqual(&s, &want[i]) {
+		if !statusEqual(s, want[i]) {
 			t.Errorf("w.Status(%v) expected %v; got %v", i, want[i], s)
 		}
 	}