diff --git a/src/proto/if_perl.pro b/src/proto/if_perl.pro
index 3272814..066c0db 100644
--- a/src/proto/if_perl.pro
+++ b/src/proto/if_perl.pro
@@ -1,9 +1,9 @@
 /* auto/if_perl.c */
-int perl_enabled __ARGS((int verbose));
-void perl_end __ARGS((void));
-void msg_split __ARGS((char_u *s, int attr));
-void perl_win_free __ARGS((win_T *wp));
-void perl_buf_free __ARGS((buf_T *bp));
-void ex_perl __ARGS((exarg_T *eap));
-void ex_perldo __ARGS((exarg_T *eap));
-void do_perleval __ARGS((char_u *str, typval_T *rettv));
+int perl_enabled(int verbose);
+void perl_end(void);
+void msg_split(char_u *s, int attr);
+void perl_win_free(win_T *wp);
+void perl_buf_free(buf_T *bp);
+void ex_perl(exarg_T *eap);
+void do_perleval(char_u *str, typval_T *rettv);
+void ex_perldo(exarg_T *eap);