diff --git a/libgfortran/ChangeLog b/libgfortran/ChangeLog
index 9a523d5eb82a..943e8e1db516 100644
--- a/libgfortran/ChangeLog
+++ b/libgfortran/ChangeLog
@@ -1,3 +1,8 @@
+2010-07-11  Kai Tietz  <kai.tietz@onevision.com>
+
+	PR libfortran/44698
+	* io/unix.c (flush_buf): Add _commit for WIN32.
+
 2010-06-28  Tobias Burnus  <burnus@net-b.de>
 
 	PR fortran/43298
diff --git a/libgfortran/io/unix.c b/libgfortran/io/unix.c
index f0cd3b9b16cb..afa5f453bd26 100644
--- a/libgfortran/io/unix.c
+++ b/libgfortran/io/unix.c
@@ -405,6 +405,10 @@ buf_flush (unix_stream * s)
   if (s->ndirty != 0)
     return -1;
 
+#ifdef _WIN32
+  _commit (s->fd);
+#endif
+
   return 0;
 }