diff --git a/src/proto/fileio.pro b/src/proto/fileio.pro
index c3cbca5..5f1bc75 100644
--- a/src/proto/fileio.pro
+++ b/src/proto/fileio.pro
@@ -7,7 +7,7 @@
 int check_file_readonly(char_u *fname, int perm);
 int buf_write(buf_T *buf, char_u *fname, char_u *sfname, linenr_T start, linenr_T end, exarg_T *eap, int append, int forceit, int reset_changed, int filtering);
 void msg_add_fname(buf_T *buf, char_u *fname);
-void msg_add_lines(int insert_space, long lnum, off_t nchars);
+void msg_add_lines(int insert_space, long lnum, off_T nchars);
 char_u *shorten_fname1(char_u *full_path);
 char_u *shorten_fname(char_u *full_path, char_u *dir_name);
 void shorten_fnames(int force);
@@ -20,7 +20,7 @@
 int check_timestamps(int focus);
 int buf_check_timestamp(buf_T *buf, int focus);
 void buf_reload(buf_T *buf, int orig_mode);
-void buf_store_time(buf_T *buf, struct stat *st, char_u *fname);
+void buf_store_time(buf_T *buf, stat_T *st, char_u *fname);
 void write_lnum_adjust(linenr_T offset);
 int delete_recursive(char_u *name);
 void vim_deltempdir(void);
diff --git a/src/proto/memline.pro b/src/proto/memline.pro
index bf5c602..bddb902 100644
--- a/src/proto/memline.pro
+++ b/src/proto/memline.pro
@@ -30,8 +30,8 @@
 char_u *makeswapname(char_u *fname, char_u *ffname, buf_T *buf, char_u *dir_name);
 char_u *get_file_in_dir(char_u *fname, char_u *dname);
 void ml_setflags(buf_T *buf);
-char_u *ml_encrypt_data(memfile_T *mfp, char_u *data, off_t offset, unsigned size);
-void ml_decrypt_data(memfile_T *mfp, char_u *data, off_t offset, unsigned size);
+char_u *ml_encrypt_data(memfile_T *mfp, char_u *data, off_T offset, unsigned size);
+void ml_decrypt_data(memfile_T *mfp, char_u *data, off_T offset, unsigned size);
 long ml_find_line_or_offset(buf_T *buf, linenr_T lnum, long *offp);
 void goto_byte(long cnt);
 /* vim: set ft=c : */
diff --git a/src/proto/os_mswin.pro b/src/proto/os_mswin.pro
index d25c174..5cdb4af 100644
--- a/src/proto/os_mswin.pro
+++ b/src/proto/os_mswin.pro
@@ -9,7 +9,7 @@
 int mch_FullName(char_u *fname, char_u *buf, int len, int force);
 int mch_isFullName(char_u *fname);
 void slash_adjust(char_u *p);
-int vim_stat(const char *name, struct stat *stp);
+int vim_stat(const char *name, stat_T *stp);
 void mch_settmode(int tmode);
 int mch_get_shellsize(void);
 void mch_set_shellsize(void);