diff --git a/src/proto/os_amiga.pro b/src/proto/os_amiga.pro
index 317e211..479297d 100644
--- a/src/proto/os_amiga.pro
+++ b/src/proto/os_amiga.pro
@@ -1,46 +1,46 @@
 /* os_amiga.c */
-void win_resize_on __ARGS((void));
-void win_resize_off __ARGS((void));
-void mch_write __ARGS((char_u *p, int len));
-int mch_inchar __ARGS((char_u *buf, int maxlen, long time, int tb_change_cnt));
-int mch_char_avail __ARGS((void));
-long_u mch_avail_mem __ARGS((int special));
-void mch_delay __ARGS((long msec, int ignoreinput));
-void mch_suspend __ARGS((void));
-void mch_init __ARGS((void));
-int mch_check_win __ARGS((int argc, char **argv));
-int mch_input_isatty __ARGS((void));
-void fname_case __ARGS((char_u *name, int len));
-void mch_settitle __ARGS((char_u *title, char_u *icon));
-void mch_restore_title __ARGS((int which));
-int mch_can_restore_title __ARGS((void));
-int mch_can_restore_icon __ARGS((void));
-int mch_get_user_name __ARGS((char_u *s, int len));
-void mch_get_host_name __ARGS((char_u *s, int len));
-long mch_get_pid __ARGS((void));
-int mch_dirname __ARGS((char_u *buf, int len));
-int mch_FullName __ARGS((char_u *fname, char_u *buf, int len, int force));
-int mch_isFullName __ARGS((char_u *fname));
-long mch_getperm __ARGS((char_u *name));
-int mch_setperm __ARGS((char_u *name, long perm));
-void mch_hide __ARGS((char_u *name));
-int mch_isdir __ARGS((char_u *name));
-void mch_mkdir __ARGS((char_u *name));
-int mch_can_exe __ARGS((char_u *name));
-int mch_nodetype __ARGS((char_u *name));
-void mch_early_init __ARGS((void));
-void mch_exit __ARGS((int r));
-void mch_settmode __ARGS((int tmode));
-int mch_screenmode __ARGS((char_u *arg));
-int mch_get_shellsize __ARGS((void));
-void mch_set_shellsize __ARGS((void));
-void mch_new_shellsize __ARGS((void));
-int mch_call_shell __ARGS((char_u *cmd, int options));
-void mch_breakcheck __ARGS((void));
-long Chk_Abort __ARGS((void));
-int mch_expandpath __ARGS((garray_T *gap, char_u *pat, int flags));
-int mch_has_exp_wildcard __ARGS((char_u *p));
-int mch_has_wildcard __ARGS((char_u *p));
-char_u *mch_getenv __ARGS((char_u *var));
-int mch_setenv __ARGS((char *var, char *value, int x));
+extern void win_resize_on __ARGS((void));
+extern void win_resize_off __ARGS((void));
+extern void mch_write __ARGS((char_u *p, int len));
+extern int mch_inchar __ARGS((char_u *buf, int maxlen, long time, int tb_change_cnt));
+extern int mch_char_avail __ARGS((void));
+extern long_u mch_avail_mem __ARGS((int special));
+extern void mch_delay __ARGS((long msec, int ignoreinput));
+extern void mch_suspend __ARGS((void));
+extern void mch_init __ARGS((void));
+extern int mch_check_win __ARGS((int argc, char **argv));
+extern int mch_input_isatty __ARGS((void));
+extern void fname_case __ARGS((char_u *name, int len));
+extern void mch_settitle __ARGS((char_u *title, char_u *icon));
+extern void mch_restore_title __ARGS((int which));
+extern int mch_can_restore_title __ARGS((void));
+extern int mch_can_restore_icon __ARGS((void));
+extern int mch_get_user_name __ARGS((char_u *s, int len));
+extern void mch_get_host_name __ARGS((char_u *s, int len));
+extern long mch_get_pid __ARGS((void));
+extern int mch_dirname __ARGS((char_u *buf, int len));
+extern int mch_FullName __ARGS((char_u *fname, char_u *buf, int len, int force));
+extern int mch_isFullName __ARGS((char_u *fname));
+extern long mch_getperm __ARGS((char_u *name));
+extern int mch_setperm __ARGS((char_u *name, long perm));
+extern void mch_hide __ARGS((char_u *name));
+extern int mch_isdir __ARGS((char_u *name));
+extern void mch_mkdir __ARGS((char_u *name));
+extern int mch_can_exe __ARGS((char_u *name));
+extern int mch_nodetype __ARGS((char_u *name));
+extern void mch_early_init __ARGS((void));
+extern void mch_exit __ARGS((int r));
+extern void mch_settmode __ARGS((int tmode));
+extern int mch_screenmode __ARGS((char_u *arg));
+extern int mch_get_shellsize __ARGS((void));
+extern void mch_set_shellsize __ARGS((void));
+extern void mch_new_shellsize __ARGS((void));
+extern int mch_call_shell __ARGS((char_u *cmd, int options));
+extern void mch_breakcheck __ARGS((void));
+extern long Chk_Abort __ARGS((void));
+extern int mch_expandpath __ARGS((garray_T *gap, char_u *pat, int flags));
+extern int mch_has_exp_wildcard __ARGS((char_u *p));
+extern int mch_has_wildcard __ARGS((char_u *p));
+extern char_u *mch_getenv __ARGS((char_u *var));
+extern int mch_setenv __ARGS((char *var, char *value, int x));
 /* vim: set ft=c : */