diff --git a/src/runtime/runtime-gdb_test.go b/src/runtime/runtime-gdb_test.go
index 4639e2fcb8d878..58f410cc59b822 100644
--- a/src/runtime/runtime-gdb_test.go
+++ b/src/runtime/runtime-gdb_test.go
@@ -108,6 +108,7 @@ import "fmt"
 import "runtime"
 var gslice []string
 func main() {
+	go func() { select{} }() // ensure a second goroutine is running
 	mapvar := make(map[string]string, 13)
 	mapvar["abc"] = "def"
 	mapvar["ghi"] = "jkl"
@@ -117,7 +118,7 @@ func main() {
 	slicevar = append(slicevar, mapvar["abc"])
 	fmt.Println("hi")
 	runtime.KeepAlive(ptrvar)
-	_ = ptrvar
+	_ = ptrvar // set breakpoint here
 	gslice = slicevar
 	runtime.KeepAlive(mapvar)
 }  // END_OF_PROGRAM
@@ -169,6 +170,16 @@ func testGdbPython(t *testing.T, cgo bool) {
 
 	src := buf.Bytes()
 
+	// Locate breakpoint line
+	var bp int
+	lines := bytes.Split(src, []byte("\n"))
+	for i, line := range lines {
+		if bytes.Contains(line, []byte("breakpoint")) {
+			bp = i
+			break
+		}
+	}
+
 	err = ioutil.WriteFile(filepath.Join(dir, "main.go"), src, 0644)
 	if err != nil {
 		t.Fatalf("failed to create file: %v", err)
@@ -203,7 +214,7 @@ func testGdbPython(t *testing.T, cgo bool) {
 	}
 	args = append(args,
 		"-ex", "set python print-stack full",
-		"-ex", "br main.go:15",
+		"-ex", fmt.Sprintf("br main.go:%d", bp),
 		"-ex", "run",
 		"-ex", "echo BEGIN info goroutines\n",
 		"-ex", "info goroutines",