diff --git a/src/proto/term.pro b/src/proto/term.pro
index 6f0f081..8c56f62 100644
--- a/src/proto/term.pro
+++ b/src/proto/term.pro
@@ -84,6 +84,7 @@
 int show_one_termcode(char_u *name, char_u *code, int printit);
 void update_tcap(int attr);
 void swap_tcap(void);
+void ansi_color2rgb(int nr, char_u *r, char_u *g, char_u *b, char_u *ansi_idx);
 void cterm_color2rgb(int nr, char_u *r, char_u *g, char_u *b, char_u *ansi_idx);
 void term_replace_bs_del_keycode(char_u *ta_buf, int ta_len, int len);
 /* vim: set ft=c : */