diff --git a/src/reactor_sim/dashboard.py b/src/reactor_sim/dashboard.py
index a29b35b..bbf09a8 100644
--- a/src/reactor_sim/dashboard.py
+++ b/src/reactor_sim/dashboard.py
@@ -293,8 +293,10 @@ class ReactorDashboard:
         return row + 1
 
     def _draw_health_bar(self, win: "curses._CursesWindow", start_y: int) -> None:
-        win.addstr(start_y, 2, "Component Health", curses.A_BOLD | curses.color_pair(1))
         height, width = win.getmaxyx()
+        if start_y >= height - 2:
+            return
+        win.addstr(start_y, 2, "Component Health", curses.A_BOLD | curses.color_pair(1))
         bar_width = max(10, min(width - 28, 40))
         for idx, (name, comp) in enumerate(self.reactor.health_monitor.components.items(), start=1):
             filled = int(bar_width * comp.integrity)