diff --git a/scripts/kconfig/lkc.h b/scripts/kconfig/lkc.h
index f8aee5f..0c8d419 100644
--- a/scripts/kconfig/lkc.h
+++ b/scripts/kconfig/lkc.h
@@ -87,6 +87,7 @@
 void sym_set_change_count(int count);
 void sym_add_change_count(int count);
 void conf_set_all_new_symbols(enum conf_def_mode mode);
+void set_all_choice_values(struct symbol *csym);
 
 struct conf_printer {
 	void (*print_symbol)(FILE *, struct symbol *, const char *, void *);