diff --git a/ui/overviewcanvas.py b/ui/overviewcanvas.py
index 4e80d328..e4c1292e 100644
--- a/ui/overviewcanvas.py
+++ b/ui/overviewcanvas.py
@@ -56,6 +56,7 @@ class OverviewCanvas:
         self.display_forces = BooleanVar(value=True)
         self.display_bases = BooleanVar(value=True)
         self.display_road = BooleanVar(value=True)
+        self.display_rules = self.compute_display_rules()
 
         parent.window.tk.protocol("<WM_DELETE_WINDOW>", self.on_close)
 
@@ -172,6 +173,12 @@ class OverviewCanvas:
         right_down = False
         left_down = False
 
+        # Detect changes on display rules
+        r = self.compute_display_rules()
+        if r != self.display_rules:
+            self.display_rules = r
+            self.redraw_required = True
+
         for event in pygame.event.get():
             if event.type == pygame.MOUSEMOTION:
                 self.redraw_required = True
@@ -427,6 +434,9 @@ class OverviewCanvas:
     def update(self):
         self.draw()
 
+    def compute_display_rules(self):
+        return sum([1 if a.get() else 0 for a in [self.display_forces, self.display_road, self.display_bases, self.display_ground_targets]])
+
     def display(self, cp: ControlPoint):
         def action(_):
             return self.parent.go_cp(cp)