diff --git a/src/proto/quickfix.pro b/src/proto/quickfix.pro
index 408bf6d..e939db2 100644
--- a/src/proto/quickfix.pro
+++ b/src/proto/quickfix.pro
@@ -1,30 +1,30 @@
 /* quickfix.c */
-int qf_init __ARGS((win_T *wp, char_u *efile, char_u *errorformat, int newlist));
-void qf_free_all __ARGS((win_T *wp));
-void copy_loclist __ARGS((win_T *from, win_T *to));
-void qf_jump __ARGS((qf_info_T *qi, int dir, int errornr, int forceit));
-void qf_list __ARGS((exarg_T *eap));
-void qf_age __ARGS((exarg_T *eap));
-void qf_mark_adjust __ARGS((win_T *wp, linenr_T line1, linenr_T line2, long amount, long amount_after));
-void ex_cwindow __ARGS((exarg_T *eap));
-void ex_cclose __ARGS((exarg_T *eap));
-void ex_copen __ARGS((exarg_T *eap));
-linenr_T qf_current_entry __ARGS((win_T *wp));
-int bt_quickfix __ARGS((buf_T *buf));
-int bt_nofile __ARGS((buf_T *buf));
-int bt_dontwrite __ARGS((buf_T *buf));
-int bt_dontwrite_msg __ARGS((buf_T *buf));
-int buf_hide __ARGS((buf_T *buf));
-int grep_internal __ARGS((cmdidx_T cmdidx));
-void ex_make __ARGS((exarg_T *eap));
-void ex_cc __ARGS((exarg_T *eap));
-void ex_cnext __ARGS((exarg_T *eap));
-void ex_cfile __ARGS((exarg_T *eap));
-void ex_vimgrep __ARGS((exarg_T *eap));
-char_u *skip_vimgrep_pat __ARGS((char_u *p, char_u **s, int *flags));
-int get_errorlist __ARGS((win_T *wp, list_T *list));
-int set_errorlist __ARGS((win_T *wp, list_T *list, int action));
-void ex_cbuffer __ARGS((exarg_T *eap));
-void ex_cexpr __ARGS((exarg_T *eap));
-void ex_helpgrep __ARGS((exarg_T *eap));
+extern int qf_init __ARGS((win_T *wp, char_u *efile, char_u *errorformat, int newlist));
+extern void qf_free_all __ARGS((win_T *wp));
+extern void copy_loclist __ARGS((win_T *from, win_T *to));
+extern void qf_jump __ARGS((qf_info_T *qi, int dir, int errornr, int forceit));
+extern void qf_list __ARGS((exarg_T *eap));
+extern void qf_age __ARGS((exarg_T *eap));
+extern void qf_mark_adjust __ARGS((win_T *wp, linenr_T line1, linenr_T line2, long amount, long amount_after));
+extern void ex_cwindow __ARGS((exarg_T *eap));
+extern void ex_cclose __ARGS((exarg_T *eap));
+extern void ex_copen __ARGS((exarg_T *eap));
+extern linenr_T qf_current_entry __ARGS((win_T *wp));
+extern int bt_quickfix __ARGS((buf_T *buf));
+extern int bt_nofile __ARGS((buf_T *buf));
+extern int bt_dontwrite __ARGS((buf_T *buf));
+extern int bt_dontwrite_msg __ARGS((buf_T *buf));
+extern int buf_hide __ARGS((buf_T *buf));
+extern int grep_internal __ARGS((cmdidx_T cmdidx));
+extern void ex_make __ARGS((exarg_T *eap));
+extern void ex_cc __ARGS((exarg_T *eap));
+extern void ex_cnext __ARGS((exarg_T *eap));
+extern void ex_cfile __ARGS((exarg_T *eap));
+extern void ex_vimgrep __ARGS((exarg_T *eap));
+extern char_u *skip_vimgrep_pat __ARGS((char_u *p, char_u **s, int *flags));
+extern int get_errorlist __ARGS((win_T *wp, list_T *list));
+extern int set_errorlist __ARGS((win_T *wp, list_T *list, int action));
+extern void ex_cbuffer __ARGS((exarg_T *eap));
+extern void ex_cexpr __ARGS((exarg_T *eap));
+extern void ex_helpgrep __ARGS((exarg_T *eap));
 /* vim: set ft=c : */