diff --git a/src/proto/buffer.pro b/src/proto/buffer.pro
index 6820d97..131ac82 100644
--- a/src/proto/buffer.pro
+++ b/src/proto/buffer.pro
@@ -16,7 +16,7 @@
 void no_write_message(void);
 void no_write_message_nobang(buf_T *buf);
 int curbuf_reusable(void);
-buf_T *buflist_new(char_u *ffname, char_u *sfname, linenr_T lnum, int flags);
+buf_T *buflist_new(char_u *ffname_arg, char_u *sfname_arg, linenr_T lnum, int flags);
 void free_buf_options(buf_T *buf, int free_p_ff);
 int buflist_getfile(int n, linenr_T lnum, int options, int forceit);
 void buflist_getfpos(void);
@@ -31,7 +31,7 @@
 linenr_T buflist_findlnum(buf_T *buf);
 void buflist_list(exarg_T *eap);
 int buflist_name_nr(int fnum, char_u **fname, linenr_T *lnum);
-int setfname(buf_T *buf, char_u *ffname, char_u *sfname, int message);
+int setfname(buf_T *buf, char_u *ffname_arg, char_u *sfname_arg, int message);
 void buf_set_name(int fnum, char_u *name);
 void buf_name_changed(buf_T *buf);
 buf_T *setaltfname(char_u *ffname, char_u *sfname, linenr_T lnum);