diff --git a/src/libslic3r/CSGMesh/PerformCSGMeshBooleans.hpp b/src/libslic3r/CSGMesh/PerformCSGMeshBooleans.hpp
index 555e9abbe0..8aa9ab4b91 100644
--- a/src/libslic3r/CSGMesh/PerformCSGMeshBooleans.hpp
+++ b/src/libslic3r/CSGMesh/PerformCSGMeshBooleans.hpp
@@ -155,10 +155,10 @@ It check_csgmesh_booleans(const Range<It> &csgrange, Visitor &&vfn)
             if (!m || MeshBoolean::cgal::empty(*m))
                 return;
 
-            if (!MeshBoolean::cgal::does_bound_a_volume(*m))
+            if (MeshBoolean::cgal::does_self_intersect(*m))
                 return;
 
-            if (MeshBoolean::cgal::does_self_intersect(*m))
+            if (!MeshBoolean::cgal::does_bound_a_volume(*m))
                 return;
         }
         catch (...) { return; }