diff --git a/evaluator.go b/evaluator.go
index 5768b854..456103d5 100644
--- a/evaluator.go
+++ b/evaluator.go
@@ -42,7 +42,12 @@ func Evaluate(ctx context.Context, tape string, out io.Writer, opts ...Evaluator
 	if err := v.Start(); err != nil {
 		return []error{err}
 	}
-	defer func() { _ = v.close() }()
+	defer func() {
+		_ = v.close()
+		if v.tty != nil && v.tty.Process != nil {
+			_ = v.tty.Process.Kill()
+		}
+	}()
 
 	// Let's wait until we can access the window.term variable.
 	//
diff --git a/vhs.go b/vhs.go
index 235e7b42..ad645a2b 100644
--- a/vhs.go
+++ b/vhs.go
@@ -140,11 +140,14 @@ func (vhs *VHS) Start() error {
 	enableNoSandbox := os.Getenv("VHS_NO_SANDBOX") != ""
 	u, err := launcher.New().Leakless(false).Bin(path).NoSandbox(enableNoSandbox).Launch()
 	if err != nil {
+		_ = vhs.tty.Process.Kill()
 		return fmt.Errorf("could not launch browser: %w", err)
 	}
 	browser := rod.New().ControlURL(u).MustConnect()
 	page, err := browser.Page(proto.TargetCreateTarget{URL: fmt.Sprintf("http://localhost:%d", port)})
 	if err != nil {
+		browser.MustClose()
+		_ = vhs.tty.Process.Kill()
 		return fmt.Errorf("could not open ttyd: %w", err)
 	}