diff --git a/src/proto/hardcopy.pro b/src/proto/hardcopy.pro
index f192814..fde7c2a 100644
--- a/src/proto/hardcopy.pro
+++ b/src/proto/hardcopy.pro
@@ -1,21 +1,20 @@
 /* hardcopy.c */
-char_u *parse_printoptions __ARGS((void));
-char_u *parse_printmbfont __ARGS((void));
-int get_printer_page_num __ARGS((void));
-int prt_header_height __ARGS((void));
-int prt_use_number __ARGS((void));
-int prt_get_unit __ARGS((int idx));
-void ex_hardcopy __ARGS((exarg_T *eap));
-void mch_print_cleanup __ARGS((void));
-int mch_print_init __ARGS((prt_settings_T *psettings, char_u *jobname, int forceit));
-int mch_print_begin __ARGS((prt_settings_T *psettings));
-void mch_print_end __ARGS((prt_settings_T *psettings));
-int mch_print_end_page __ARGS((void));
-int mch_print_begin_page __ARGS((char_u *str));
-int mch_print_blank_page __ARGS((void));
-void mch_print_start_line __ARGS((int margin, int page_line));
-int mch_print_text_out __ARGS((char_u *p, int len));
-void mch_print_set_font __ARGS((int iBold, int iItalic, int iUnderline));
-void mch_print_set_bg __ARGS((long_u bgcol));
-void mch_print_set_fg __ARGS((long_u fgcol));
+extern char_u *parse_printoptions __ARGS((void));
+extern char_u *parse_printmbfont __ARGS((void));
+extern int prt_header_height __ARGS((void));
+extern int prt_use_number __ARGS((void));
+extern int prt_get_unit __ARGS((int idx));
+extern void ex_hardcopy __ARGS((exarg_T *eap));
+extern void mch_print_cleanup __ARGS((void));
+extern int mch_print_init __ARGS((prt_settings_T *psettings, char_u *jobname, int forceit));
+extern int mch_print_begin __ARGS((prt_settings_T *psettings));
+extern void mch_print_end __ARGS((prt_settings_T *psettings));
+extern int mch_print_end_page __ARGS((void));
+extern int mch_print_begin_page __ARGS((char_u *str));
+extern int mch_print_blank_page __ARGS((void));
+extern void mch_print_start_line __ARGS((int margin, int page_line));
+extern int mch_print_text_out __ARGS((char_u *p, int len));
+extern void mch_print_set_font __ARGS((int iBold, int iItalic, int iUnderline));
+extern void mch_print_set_bg __ARGS((long_u bgcol));
+extern void mch_print_set_fg __ARGS((long_u fgcol));
 /* vim: set ft=c : */