diff --git a/src/road_gui.cpp b/src/road_gui.cpp
index 0c10b97c46..a9a09eb252 100644
--- a/src/road_gui.cpp
+++ b/src/road_gui.cpp
@@ -825,7 +825,7 @@ struct BuildRoadToolbarWindow : Window {
 
 	void OnRealtimeTick([[maybe_unused]] uint delta_ms) override
 	{
-		if (this->IsWidgetLowered(WID_ROT_BUILD_WAYPOINT)) CheckRedrawRoadWaypointCoverage(this);
+		if (_game_mode == GM_NORMAL && this->IsWidgetLowered(WID_ROT_BUILD_WAYPOINT)) CheckRedrawRoadWaypointCoverage(this);
 	}
 
 	/**