1 files changed, 3 insertions, 1 deletions
diff --git a/gc.c b/gc.c
index d29c3596..446060ec 100644
--- a/gc.c
+++ b/gc.c
@@ -428,9 +428,11 @@ tail_call:
     mark_obj(obj->ls.props->term);
     mark_obj_tail(obj->ls.list);
   case COBJ:
+    obj->co.ops->mark(obj);
+    mark_obj_tail(obj->co.cls->cls_sym);
   case CPTR:
     obj->co.ops->mark(obj);
-    mark_obj_tail(obj->co.cls);
+    mark_obj_tail(obj->cp.cls);
   case ENV:
     mark_obj(obj->e.vbindings);
     mark_obj(obj->e.fbindings);