diff --git a/server/gameserver/navmeshbuilder.cc b/server/gameserver/navmeshbuilder.cc
index a8bde38..abe5b77 100644
--- a/server/gameserver/navmeshbuilder.cc
+++ b/server/gameserver/navmeshbuilder.cc
@@ -25,6 +25,10 @@ void NavMeshBuilder::UnInit()
 void NavMeshBuilder::Build(MapInstance* map_instance)
 {
     BuilderParams builder_params;
+    {
+        builder_params.map_instance = map_instance;
+        builder_params.gemo = new f8::InputGeom();
+    }
     InitBuilderParams(builder_params);
     CreateTileCache(builder_params);
     CreateNavMesh(builder_params);