diff --git a/src/code/z_bgcheck.cpp b/src/code/z_bgcheck.cpp
index df80ce6a5..9a4f05914 100644
--- a/src/code/z_bgcheck.cpp
+++ b/src/code/z_bgcheck.cpp
@@ -1560,8 +1560,8 @@ void BgCheck_Allocate(CollisionContext* colCtx, GlobalContext* globalCtx, Collis
         // "/* BGCheck Normal Size %dbyte  */\n"
         osSyncPrintf("/* BGCheck Normal Size %dbyte  */\n", colCtx->memSize);
         colCtx->dyna.polyNodesMax = 1000;
-        colCtx->dyna.polyListMax = 1024;
-        colCtx->dyna.vtxListMax = 1024;
+        colCtx->dyna.polyListMax = 512;
+        colCtx->dyna.vtxListMax = 512;
         useCustomSubdivisions = false;
 
         for (i = 0; i < ARRAY_COUNT(sceneSubdivisionList); i++) {