diff --git a/src/proto/userfunc.pro b/src/proto/userfunc.pro
index 08dedae..dcc5b34 100644
--- a/src/proto/userfunc.pro
+++ b/src/proto/userfunc.pro
@@ -33,6 +33,7 @@
 char_u *printable_func_name(ufunc_T *fp);
 char_u *trans_function_name(char_u **pp, int *is_global, int skip, int flags, funcdict_T *fdp, partial_T **partial, type_T **type);
 char_u *untrans_function_name(char_u *name);
+char_u *save_function_name(char_u **name, int *is_global, int skip, int flags, funcdict_T *fudi);
 void list_functions(regmatch_T *regmatch);
 ufunc_T *define_function(exarg_T *eap, char_u *name_arg);
 void ex_function(exarg_T *eap);