diff --git a/src/ship_cmd.cpp b/src/ship_cmd.cpp
--- a/src/ship_cmd.cpp
+++ b/src/ship_cmd.cpp
@@ -211,6 +211,7 @@ Trackdir Ship::GetVehicleTrackdir() cons
 void Ship::MarkDirty()
 {
 	this->UpdateViewport(false, false);
+	this->UpdateCache();
 }
 
 static void PlayShipSound(const Vehicle *v)