diff --git a/mingw-w64-crt/Makefile.am b/mingw-w64-crt/Makefile.am
index fab93c1..8ee5b8c 100644
--- a/mingw-w64-crt/Makefile.am
+++ b/mingw-w64-crt/Makefile.am
@@ -1126,7 +1126,7 @@
   stdio/strtok_r.c \
   stdio/_Exit.c            stdio/_findfirst64i32.c   stdio/_findnext64i32.c   stdio/_wfindfirst64i32.c  stdio/_wfindnext64i32.c \
   stdio/asprintf.c \
-  stdio/fopen64.c                                    stdio/fseeko64.c                                                           \
+  stdio/fopen64.c                                                                                                               \
   stdio/ftello64.c         stdio/ftruncate64.c       stdio/lltoa.c            stdio/lltow.c             stdio/lseek64.c         \
   stdio/__mingw_fix_stat.h stdio/__mingw_fix_stat_finish.c \
   stdio/__mingw_fix_stat_path.c stdio/__mingw_fix_wstat_path.c \
diff --git a/mingw-w64-crt/def-include/crt-aliases.def.in b/mingw-w64-crt/def-include/crt-aliases.def.in
index 25f5b87..b30e8ea 100644
--- a/mingw-w64-crt/def-include/crt-aliases.def.in
+++ b/mingw-w64-crt/def-include/crt-aliases.def.in
@@ -319,6 +319,9 @@
 #else
 fstat64 == _fstat64
 #endif
+#ifndef FIXED_SIZE_SYMBOLS
+fseeko64 == _fseeki64
+#endif
 
 ; This is list of symbol aliases for GNU functions which are not part of POSIX or ISO C
 strcasecmp == _stricmp
diff --git a/mingw-w64-crt/lib-common/api-ms-win-crt-stdio-l1-1-0.def b/mingw-w64-crt/lib-common/api-ms-win-crt-stdio-l1-1-0.def
index abdcb82..38bd1aa 100644
--- a/mingw-w64-crt/lib-common/api-ms-win-crt-stdio-l1-1-0.def
+++ b/mingw-w64-crt/lib-common/api-ms-win-crt-stdio-l1-1-0.def
@@ -63,6 +63,7 @@
 _fread_nolock_s
 _fseek_nolock
 _fseeki64
+fseeko64 == _fseeki64
 _fseeki64_nolock
 _fsopen
 _ftell_nolock
diff --git a/mingw-w64-crt/stdio/_fseeki64.c b/mingw-w64-crt/stdio/_fseeki64.c
index 3ec4ccb..6881930 100644
--- a/mingw-w64-crt/stdio/_fseeki64.c
+++ b/mingw-w64-crt/stdio/_fseeki64.c
@@ -38,3 +38,6 @@
 #define ARGS FILE *stream, __int64 offset, int whence
 #define CALL stream, offset, whence
 #include "msvcrt_or_emu_glue.h"
+
+int __attribute__ ((alias ("_fseeki64"))) __cdecl fseeko64(FILE *stream, _off64_t offset, int whence);
+extern int __attribute__ ((alias (__MINGW64_STRINGIFY(__MINGW_IMP_SYMBOL(_fseeki64))))) (__cdecl *__MINGW_IMP_SYMBOL(fseeko64))(FILE *stream, _off64_t offset, int whence);
diff --git a/mingw-w64-crt/stdio/fseeko64.c b/mingw-w64-crt/stdio/fseeko64.c
deleted file mode 100644
index 3161634..0000000
--- a/mingw-w64-crt/stdio/fseeko64.c
+++ /dev/null
@@ -1,34 +0,0 @@
-/**
- * This file has no copyright assigned and is placed in the Public Domain.
- * This file is part of the mingw-w64 runtime package.
- * No warranty is given; refer to the file DISCLAIMER.PD within this package.
- */
-#include <stdio.h>
-#include <io.h>
-#include <errno.h>
-
-int fseeko64 (FILE* stream, _off64_t offset, int whence)
-{
-  fpos_t pos;
-  if (whence == SEEK_CUR)
-    {
-      /* If stream is invalid, fgetpos sets errno. */
-      if (fgetpos (stream, &pos))
-        return (-1);
-      pos += (fpos_t) offset;
-    }
-  else if (whence == SEEK_END)
-    {
-      /* If writing, we need to flush before getting file length.  */
-      fflush (stream);
-      pos = (fpos_t) (_filelengthi64 (_fileno (stream)) + offset);
-    }
-  else if (whence == SEEK_SET)
-    pos = (fpos_t) offset;
-  else
-    {
-      errno = EINVAL;
-      return (-1);
-    }
-  return fsetpos (stream, &pos);
-}