diff --git a/report/marshal_test.go b/report/marshal_test.go
new file mode 100644
index 000000000..8d9865862
--- /dev/null
+++ b/report/marshal_test.go
@@ -0,0 +1,22 @@
+package report_test
+
+import (
+	"bytes"
+	"reflect"
+	"testing"
+
+	"github.com/weaveworks/scope/report"
+)
+
+func TestRoundtrip(t *testing.T) {
+	var buf bytes.Buffer
+	r1 := report.MakeReport()
+	r1.WriteBinary(&buf)
+	r2, err := report.MakeFromBinary(&buf)
+	if err != nil {
+		t.Error(err)
+	}
+	if !reflect.DeepEqual(r1, *r2) {
+		t.Errorf("%v != %v", r1, *r2)
+	}
+}