diff --git a/src/proto/evalvars.pro b/src/proto/evalvars.pro
index 9e08f66..ab4320d 100644
--- a/src/proto/evalvars.pro
+++ b/src/proto/evalvars.pro
@@ -13,7 +13,7 @@
 int get_spellword(list_T *list, char_u **pp);
 void prepare_vimvar(int idx, typval_T *save_tv);
 void restore_vimvar(int idx, typval_T *save_tv);
-list_T *heredoc_get(exarg_T *eap, char_u *cmd, int script_get);
+list_T *heredoc_get(exarg_T *eap, char_u *cmd, int script_get, int vim9compile);
 void ex_var(exarg_T *eap);
 void ex_let(exarg_T *eap);
 int ex_let_vars(char_u *arg_start, typval_T *tv, int copy, int semicolon, int var_count, int flags, char_u *op);
diff --git a/src/proto/vim9compile.pro b/src/proto/vim9compile.pro
index 0f3094f..1fe46f0 100644
--- a/src/proto/vim9compile.pro
+++ b/src/proto/vim9compile.pro
@@ -16,6 +16,7 @@
 int may_get_next_line_error(char_u *whitep, char_u **arg, cctx_T *cctx);
 void fill_exarg_from_cctx(exarg_T *eap, cctx_T *cctx);
 int func_needs_compiling(ufunc_T *ufunc, compiletype_T compile_type);
+int compile_heredoc_string(char_u *str, int evalstr, cctx_T *cctx);
 int assignment_len(char_u *p, int *heredoc);
 void vim9_declare_error(char_u *name);
 int get_var_dest(char_u *name, assign_dest_T *dest, cmdidx_T cmdidx, int *option_scope, int *vimvaridx, type_T **type, cctx_T *cctx);