diff --git a/src/physics/physical_object.cpp b/src/physics/physical_object.cpp
index b3ba362a0..581ee8073 100644
--- a/src/physics/physical_object.cpp
+++ b/src/physics/physical_object.cpp
@@ -20,6 +20,7 @@
 
 #include "config/stk_config.hpp"
 #include "graphics/central_settings.hpp"
+#include "graphics/irr_driver.hpp"
 #include "graphics/material.hpp"
 #include "graphics/material_manager.hpp"
 #include "graphics/mesh_tools.hpp"