diff --git a/src/proto/userfunc.pro b/src/proto/userfunc.pro
index 3e417dd..074a2b8 100644
--- a/src/proto/userfunc.pro
+++ b/src/proto/userfunc.pro
@@ -58,6 +58,7 @@
 void func_ref(char_u *name);
 void func_ptr_ref(ufunc_T *fp);
 void ex_return(exarg_T *eap);
+int add_defer(char_u *name, int argcount_arg, typval_T *argvars);
 void handle_defer(void);
 void ex_call(exarg_T *eap);
 int do_return(exarg_T *eap, int reanimate, int is_cmd, void *rettv);
diff --git a/src/proto/vim9cmds.pro b/src/proto/vim9cmds.pro
index 10fc2c7..79a1557 100644
--- a/src/proto/vim9cmds.pro
+++ b/src/proto/vim9cmds.pro
@@ -21,6 +21,7 @@
 char_u *compile_endtry(char_u *arg, cctx_T *cctx);
 char_u *compile_throw(char_u *arg, cctx_T *cctx);
 char_u *compile_eval(char_u *arg, cctx_T *cctx);
+int get_defer_var_idx(cctx_T *cctx);
 char_u *compile_defer(char_u *arg_start, cctx_T *cctx);
 char_u *compile_mult_expr(char_u *arg, int cmdidx, cctx_T *cctx);
 char_u *compile_put(char_u *arg, exarg_T *eap, cctx_T *cctx);
diff --git a/src/proto/vim9execute.pro b/src/proto/vim9execute.pro
index 80afb85..5203304 100644
--- a/src/proto/vim9execute.pro
+++ b/src/proto/vim9execute.pro
@@ -3,6 +3,8 @@
 void update_has_breakpoint(ufunc_T *ufunc);
 void funcstack_check_refcount(funcstack_T *funcstack);
 int set_ref_in_funcstacks(int copyID);
+int in_def_function(void);
+int add_defer_function(char_u *name, int argcount, typval_T *argvars);
 char_u *char_from_string(char_u *str, varnumber_T index);
 char_u *string_slice(char_u *str, varnumber_T first, varnumber_T last, int exclusive);
 int fill_partial_and_closure(partial_T *pt, ufunc_T *ufunc, ectx_T *ectx);