diff --git a/src/proto/eval.pro b/src/proto/eval.pro
index 1fb36c2..d94e8ad 100644
--- a/src/proto/eval.pro
+++ b/src/proto/eval.pro
@@ -59,6 +59,7 @@
 int set_ref_in_list(list_T *ll, int copyID);
 int set_ref_in_list_items(list_T *l, int copyID, ht_stack_T **ht_stack);
 int set_ref_in_callback(callback_T *cb, int copyID);
+int set_ref_in_item_class(class_T *cl, int copyID, ht_stack_T **ht_stack, list_stack_T **list_stack);
 int set_ref_in_item(typval_T *tv, int copyID, ht_stack_T **ht_stack, list_stack_T **list_stack);
 char_u *echo_string_core(typval_T *tv, char_u **tofree, char_u *numbuf, int copyID, int echo_style, int restore_copyID, int composite_val);
 char_u *echo_string(typval_T *tv, char_u **tofree, char_u *numbuf, int copyID);
diff --git a/src/proto/vim9class.pro b/src/proto/vim9class.pro
index 5fa0ab2..e685c03 100644
--- a/src/proto/vim9class.pro
+++ b/src/proto/vim9class.pro
@@ -12,6 +12,8 @@
 void object_unref(object_T *obj);
 void copy_class(typval_T *from, typval_T *to);
 void class_unref(class_T *cl);
+int class_free_nonref(int copyID);
+int set_ref_in_classes(int copyID);
 void object_created(object_T *obj);
 void object_cleared(object_T *obj);
 int object_free_nonref(int copyID);