-#define VEHICLES_ENABLED
+#ifndef VEHICLES_INCLUDE_H
+#define VEHICLES_INCLUDE_H
+
+#include "all.qh"
-#ifdef VEHICLES_ENABLED
#ifdef CSQC
#include "vehicles.qh"
#include "cl_vehicles.qh"
-#endif // CSQC
-#ifdef SVQC
+#elif defined(SVQC)
#include "vehicles.qh"
#include "sv_vehicles.qh"
#endif // SVQC
-#endif // VEHICLES_ENABLED
+
+#endif