diff --git a/qbsp/qbsp.cc b/qbsp/qbsp.cc
index d8cb3e7d..184a76ba 100644
--- a/qbsp/qbsp.cc
+++ b/qbsp/qbsp.cc
@@ -215,11 +215,11 @@ static void ExportBrushList(mapentity_t *entity, node_t *node)
     brush_state = {};
 
     for (auto &b : entity->brushes) {
+        b.outputnumber = { static_cast<uint32_t>(map.bsp.dbrushes.size()) };
+
         dbrush_t &brush = map.bsp.dbrushes.emplace_back(
             dbrush_t{static_cast<int32_t>(map.bsp.dbrushsides.size()), 0, b.contents.native});
 
-        b.outputnumber = { static_cast<uint32_t>(map.bsp.dbrushes.size()) };
-
         auto bevels = AddBrushBevels(b);
 
         for (auto &plane : bevels) {