diff --git a/src/proto/blowfish.pro b/src/proto/blowfish.pro
index 66d029c..d959846 100644
--- a/src/proto/blowfish.pro
+++ b/src/proto/blowfish.pro
@@ -1,6 +1,6 @@
 /* blowfish.c */
-void crypt_blowfish_encode __ARGS((cryptstate_T *state, char_u *from, size_t len, char_u *to));
-void crypt_blowfish_decode __ARGS((cryptstate_T *state, char_u *from, size_t len, char_u *to));
-void crypt_blowfish_init __ARGS((cryptstate_T *state, char_u *key, char_u *salt, int salt_len, char_u *seed, int seed_len));
-int blowfish_self_test __ARGS((void));
+void crypt_blowfish_encode(cryptstate_T *state, char_u *from, size_t len, char_u *to);
+void crypt_blowfish_decode(cryptstate_T *state, char_u *from, size_t len, char_u *to);
+void crypt_blowfish_init(cryptstate_T *state, char_u *key, char_u *salt, int salt_len, char_u *seed, int seed_len);
+int blowfish_self_test(void);
 /* vim: set ft=c : */