diff --git a/r5dev/game/server/detour_impl.h b/r5dev/game/server/detour_impl.h
index b9b973fd..12c2881a 100644
--- a/r5dev/game/server/detour_impl.h
+++ b/r5dev/game/server/detour_impl.h
@@ -33,6 +33,7 @@ enum EHULL_SIZE
 };
 
 inline dtNavMesh** g_pNavMesh = nullptr;
+dtNavMesh* GetNavMeshForHull(int hull);
 ///////////////////////////////////////////////////////////////////////////////
 class VRecast : public IDetour
 {