diff --git a/go-junit-report.go b/go-junit-report.go
index e1a38aa..099e94d 100644
--- a/go-junit-report.go
+++ b/go-junit-report.go
@@ -53,7 +53,7 @@ func main() {
 			fmt.Printf("%02d: %#v\n", i, ev)
 		}
 	}
-	report := gtr.FromEvents(events)
+	report := gtr.FromEvents(events, *packageName)
 
 	if !*noXMLHeader {
 		fmt.Fprintf(os.Stdout, xml.Header)
diff --git a/go-junit-report_test.go b/go-junit-report_test.go
index 82c6282..5773dc3 100644
--- a/go-junit-report_test.go
+++ b/go-junit-report_test.go
@@ -1574,12 +1574,12 @@ func TestNewOutput(t *testing.T) {
 		}
 
 		t.Run(testCase.name, func(t *testing.T) {
-			testNewParser(testCase.name, testCase.reportName, t)
+			testNewParser(testCase.name, testCase.reportName, testCase.packageName, t)
 		})
 	}
 }
 
-func testNewParser(input, reportFile string, t *testing.T) {
+func testNewParser(input, reportFile, packageName string, t *testing.T) {
 	file, err := os.Open("testdata/" + input)
 	if err != nil {
 		t.Fatal(err)
@@ -1591,7 +1591,7 @@ func testNewParser(input, reportFile string, t *testing.T) {
 		t.Fatal(err)
 	}
 
-	report := gtr.FromEvents(events)
+	actual := gtr.JUnit(gtr.FromEvents(events, packageName))
 
 	actual, err := toXML(gtr.JUnit(report))
 	if err != nil {
diff --git a/pkg/gtr/builder.go b/pkg/gtr/builder.go
index 5fbdffe..94b2052 100644
--- a/pkg/gtr/builder.go
+++ b/pkg/gtr/builder.go
@@ -15,19 +15,23 @@ type ReportBuilder struct {
 	nextId int // next free id
 	lastId int // last test id // TODO: stack?
 	output []string
+
+	// defaults
+	packageName string
 }
 
-func NewReportBuilder() *ReportBuilder {
+func NewReportBuilder(packageName string) *ReportBuilder {
 	return &ReportBuilder{
-		tests:      make(map[int]Test),
-		benchmarks: make(map[int]Benchmark),
-		nextId:     1,
+		tests:       make(map[int]Test),
+		benchmarks:  make(map[int]Benchmark),
+		nextId:      1,
+		packageName: packageName,
 	}
 }
 
 func (b *ReportBuilder) flush() {
 	if len(b.tests) > 0 {
-		b.CreatePackage("unknown", 0)
+		b.CreatePackage(b.packageName, 0)
 	}
 }
 
diff --git a/pkg/gtr/gtr.go b/pkg/gtr/gtr.go
index cabde17..f532aac 100644
--- a/pkg/gtr/gtr.go
+++ b/pkg/gtr/gtr.go
@@ -59,8 +59,9 @@ type Benchmark struct {
 }
 
 // FromEvents creates a Report from the given list of events.
-func FromEvents(events []Event) Report {
-	report := NewReportBuilder()
+// TODO: make packageName optional option
+func FromEvents(events []Event, packageName string) Report {
+	report := NewReportBuilder(packageName)
 	for _, ev := range events {
 		switch ev.Type {
 		case "run_test":