diff --git a/runtime/Java/src/org/antlr/v4/runtime/tree/gui/TreeViewer.java b/runtime/Java/src/org/antlr/v4/runtime/tree/gui/TreeViewer.java
index 40221b846..3b8504824 100644
--- a/runtime/Java/src/org/antlr/v4/runtime/tree/gui/TreeViewer.java
+++ b/runtime/Java/src/org/antlr/v4/runtime/tree/gui/TreeViewer.java
@@ -299,6 +299,7 @@ public class TreeViewer extends JComponent {
 	@NotNull
 	protected static JDialog showInDialog(final TreeViewer viewer) {
 		final JDialog dialog = new JDialog();
+		dialog.setTitle("Parse Tree Inspector");
 
 		// Make new content panes
 		final Container mainPane = new JPanel(new BorderLayout(5,5));