diff --git a/neo/tools/compilers/aas/BrushBSP.cpp b/neo/tools/compilers/aas/BrushBSP.cpp
index 7fb5e947..811a9f8a 100644
--- a/neo/tools/compilers/aas/BrushBSP.cpp
+++ b/neo/tools/compilers/aas/BrushBSP.cpp
@@ -2258,8 +2258,12 @@ bool idBrushBSP::TryMergeLeafNodes( idBrushBSPPortal* portal, int side )
 	// replace every reference to node2 by a reference to node1
 	UpdateTreeAfterMerge_r( root, bounds, node2, node1 );
 
-	if (node2->GetFlags() & NODE_DONE)
+	// HarrievG: fixed crash with polygon maps
+	if( node2->GetFlags() & NODE_DONE )
+	{
 		delete node2;
+	}
+	// HarrievG end
 
 	return true;
 }