diff --git a/src/ppload.c b/src/ppload.c
index 0e72039..39af17c 100644
--- a/src/ppload.c
+++ b/src/ppload.c
@@ -1,6 +1,11 @@
 
 #include "pplib.h"
 
+#ifdef _WIN32 /* --ak */
+extern FILE *ppu8open(const char *filename, const char *mode);
+#define fopen ppu8open
+#endif /* _WIN32 --ak */
+
 const char * ppobj_kind[] = { "none", "null", "bool", "integer", "number", "name", "string", "array", "dict", "stream", "ref" };
 
 #define ignored_char(c) (c == 0x20 || c == 0x0A || c == 0x0D || c == 0x09 || c == 0x00)
diff --git a/src/pptest1.c b/src/pptest1.c
index eabb0ea..2389eaf 100644
--- a/src/pptest1.c
+++ b/src/pptest1.c
@@ -61,6 +61,10 @@ static int usage (const char *argv0)
   return 0;
 }
 
+#ifdef _WIN32 /* --ak */
+#include <fcntl.h>
+#endif /* _WIN32 --ak */
+
 int main (int argc, const char **argv)
 {
   const char *filepath;
@@ -69,6 +73,10 @@ int main (int argc, const char **argv)
   const void *data;
   size_t size;
 
+#ifdef _WIN32 /* --ak */
+  _setmode(fileno(stdout), _O_BINARY);
+#endif /* _WIN32 --ak */
+
   if (argc < 2)
     return usage(argv[0]);
   for (a = 1; a < argc; ++a)
diff --git a/src/pptest2.c b/src/pptest2.c
index 766110d..70f0b64 100644
--- a/src/pptest2.c
+++ b/src/pptest2.c
@@ -36,6 +36,10 @@ static void log_callback (const char *message, void *alien)
   fprintf((FILE *)alien, "\nooops: %s\n", message);
 }
 
+#ifdef _WIN32 /* --ak */
+#include <fcntl.h>
+#endif /* _WIN32 --ak */
+
 int main (int argc, const char **argv)
 {
   const char *filepath;
@@ -54,6 +58,10 @@ int main (int argc, const char **argv)
   ppname *op;
   size_t operators;
 
+#ifdef _WIN32 /* --ak */
+  _setmode(fileno(stdout), _O_BINARY);
+#endif /* _WIN32 --ak */
+
   if (argc < 2)
     return usage(argv[0]);
   ppstream_init_buffers();
diff --git a/src/pptest3.c b/src/pptest3.c
index 815ed51..8822dca 100644
--- a/src/pptest3.c
+++ b/src/pptest3.c
@@ -76,6 +76,10 @@ static void check_stream_chunks (ppstream *stream)
 
 #define USE_BUFFERS_POOL 1
 
+#ifdef _WIN32 /* --ak */
+#include <fcntl.h>
+#endif /* _WIN32 --ak */
+
 int main (int argc, const char **argv)
 {
   const char *filepath;
@@ -87,6 +91,10 @@ int main (int argc, const char **argv)
   ppuint refnum;
   ppref *ref;
 
+#ifdef _WIN32 /* --ak */
+  _setmode(fileno(stdout), _O_BINARY);
+#endif /* _WIN32 --ak */
+
   if (argc < 2)
     return usage(argv[0]);
   if (USE_BUFFERS_POOL)
diff --git a/src/util/utiliof.c b/src/util/utiliof.c
index 41d6fba..836a60e 100644
--- a/src/util/utiliof.c
+++ b/src/util/utiliof.c
@@ -8,6 +8,11 @@
 #include "utillog.h"
 #include "utiliof.h"
 
+#ifdef _WIN32 /* --ak */
+FILE *ppu8open(const char *filename, const char *mode);
+#define fopen ppu8open
+#endif /* _WIN32 --ak */
+
 /* commons */
 
 void * iof_copy_data (const void *data, size_t size)
@@ -2969,25 +2974,88 @@ iof * iof_filter_reader_replacement (iof *P, iof_handler handler, size_t statesi
   return F;
 }
 
+#ifdef _WIN32 /* --ak */
+#include <sys/stat.h>
+#include <wchar.h>
+#include <windows.h>
+/*
+  Get wide string from multibyte string. (by T. Tanaka)
+*/
+static wchar_t *
+get_wstring_from_mbstring(int cp, const char *mbstr, wchar_t *wstr)
+{
+  int len;
 
+  len = MultiByteToWideChar(cp, 0, mbstr, -1, wstr, 0);
+  if (len==0) {
+    return NULL;
+  }
+  if (wstr==NULL) {
+    wstr = (wchar_t *)util_malloc(sizeof(wchar_t)*(len+1));
+  }
+  len = MultiByteToWideChar(cp, 0, mbstr, -1, wstr, len+1);
+  if (len==0) {
+    return NULL;
+  }
+  return wstr;
+}
 
+FILE *ppu8open(const char *filename, const char *mode)
+{
+  wchar_t *wfilename, *wmode;
+  FILE *ret;
+  int  cp;
+  unsigned char *fnn;
+  unsigned char *p;
+  size_t len = strlen(filename);
 
+  fnn = (unsigned char *)util_malloc(len + 10);
+  p = strstr(filename, ".\\");
+  if (!p) {
+     p = strstr(filename, "./");
+  }
+  if (!p && len > 2) {
+     p = strstr(filename + 2, "//");
+  }
+  if (!p && len > 2) {
+     p = strstr(filename + 2, "\\\\");
+  }
+  if (!p && len > 2) {
+     p = strstr(filename + 2, "\\/");
+  }
+  if (!p && len > 2) {
+     p = strstr(filename + 2, "/\\");
+  }
+  if (!p && len > 2 && ((filename[0] == '/' && filename[1] == '/') ||
+      (filename[0] == '\\' && filename[1] == '\\' &&
+       filename[2] != '?'))) {
+     filename += 2;
+     strcpy (fnn, "\\\\?\\UNC\\");
+     strcat (fnn, filename);
+  } else if (!p && len > 2 && filename[1] == ':') {
+     strcpy (fnn, "\\\\?\\");
+     strcat (fnn, filename);
+  } else {
+     strcpy (fnn, filename);
+  }
+  for (p = fnn; *p; p++) {
+    if (*p == '/')
+       *p = '\\';
+  }
 
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
+  cp = CP_UTF8;
+  wfilename = get_wstring_from_mbstring(cp, fnn, wfilename=NULL);
+  free(fnn);
+  if (wfilename == NULL)
+    return NULL;
+  wmode = get_wstring_from_mbstring(cp, mode, wmode=NULL);
+  if (wmode == NULL) {
+    free(wfilename);
+    return NULL;
+  }
+  ret = _wfopen((const wchar_t *)wfilename, (const wchar_t *)wmode);
+  free(wfilename);
+  free(wmode);
+  return ret;
+}
+#endif /* _WIN32 --ak */
diff --git a/src/util/utilmd5.c b/src/util/utilmd5.c
index 8719842..d21a41b 100644
--- a/src/util/utilmd5.c
+++ b/src/util/utilmd5.c
@@ -61,6 +61,11 @@
 
 #include "utilmd5.h"
 
+#ifdef _WIN32 /* --ak */
+extern FILE *ppu8open(const char *filename, const char *mode);
+#define fopen ppu8open
+#endif /* _WIN32 --ak */
+
 #undef BYTE_ORDER /* 1 = big-endian, -1 = little-endian, 0 = unknown */
 #ifdef ARCH_IS_BIG_ENDIAN
 #  define BYTE_ORDER (ARCH_IS_BIG_ENDIAN ? 1 : -1)
diff --git a/src/util/utilsha.c b/src/util/utilsha.c
index 596bf76..269c69a 100644
--- a/src/util/utilsha.c
+++ b/src/util/utilsha.c
@@ -38,6 +38,11 @@
 //#include <assert.h> /* assert() */
 #include "utilsha.h"
 
+#ifdef _WIN32 /* --ak */
+extern FILE *ppu8open(const char *filename, const char *mode);
+#define fopen ppu8open
+#endif /* _WIN32 --ak */
+
 /*
  * UNROLLED TRANSFORM LOOP NOTE:
  * You can define SHA2_UNROLL_TRANSFORM to use the unrolled transform