1 files changed, 1 insertions, 0 deletions
diff --git a/struct.h b/struct.h
index 0aa446e1..6b139653 100644
--- a/struct.h
+++ b/struct.h
@@ -32,6 +32,7 @@ extern val lambda_set_s;
 extern val iter_begin_s, iter_more_s, iter_item_s, iter_step_s, iter_reset_s;
 
 extern struct cobj_ops struct_inst_ops;
+extern struct cobj_class *struct_cls;
 
 enum special_slot {
   equal_m, nullify_m, from_list_m, lambda_m, lambda_set_m,