diff --git a/qbsp/qbsp.cc b/qbsp/qbsp.cc
index f2cc96fa..ecf3f01c 100644
--- a/qbsp/qbsp.cc
+++ b/qbsp/qbsp.cc
@@ -546,7 +546,7 @@ static void ProcessEntity(mapentity_t &entity, hull_index_t hullnum)
             if (FillOutside(tree, hullnum, brushes)) {
                 // make a really good tree
                 tree.clear();
-                BrushBSP(tree, entity, brushes, tree_split_t::AUTO);
+                BrushBSP(tree, entity, brushes, tree_split_t::PRECISE);
 
                 // fill again so PruneNodes works
                 MakeTreePortals(tree);