diff --git a/src/ui.rs b/src/ui.rs
index 07237608..15b437eb 100644
--- a/src/ui.rs
+++ b/src/ui.rs
@@ -387,6 +387,7 @@ impl Ui {
                                 "movement: hjkl / ← ↓ ↑ →",
                                 "expose tile: spacebar",
                                 "flag tile: f",
+                                "restart: r",
                                 "quit: q",
                             ],
                             ':',
@@ -402,7 +403,7 @@ impl Ui {
                     let info_text_split_rects = Layout::default()
                         .direction(Direction::Vertical)
                         .constraints(vec![
-                            Constraint::Min(vertical_pad_block_height - 3),
+                            Constraint::Min(vertical_pad_block_height.saturating_sub(3)),
                             Constraint::Length(3),
                         ])
                         .split(middle_mines_rects[0]);
@@ -520,6 +521,10 @@ impl Ui {
                             app.expose_all()?;
                         }
                     }
+                    Key::Char('r') => {
+                        app = App::new(Board::new(rows, columns, mines)?);
+                        lost = false;
+                    }
                     Key::Char('q') => break,
                     _ => {}
                 }