diff --git a/ChangeLog b/ChangeLog
index 554db48721..7992709b88 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Thu May 17 12:18:47 2012  Yuki Yugui Sonoda  <yugui@google.com>
+
+	* io.c: Fix a mistake on merging the patch in the previous commit.
+
 Thu May 17 11:33:07 2012  Yuki Yugui Sonoda  <yugui@google.com>
 
 	Imports Ruby's port to NativeClient (a.k.a NaCl).
diff --git a/io.c b/io.c
index ad2394daf6..87b0233de9 100644
--- a/io.c
+++ b/io.c
@@ -1506,7 +1506,7 @@ rb_io_set_pos(VALUE io, VALUE offset)
 
 static void clear_readconv(rb_io_t *fptr);
 
-#if defined(HAVE_FSYNC) || !defined(_WIN32)
+#if defined(HAVE_FSYNC)
 /*
  *  call-seq:
  *     ios.rewind    -> 0
@@ -1635,7 +1635,6 @@ rb_io_eof(VALUE io)
     return Qfalse;
 }
 
-#ifdef HAVE_FSYNC
 /*
  *  call-seq:
  *     ios.sync    -> true or false
@@ -1659,6 +1658,8 @@ rb_io_sync(VALUE io)
     return (fptr->mode & FMODE_SYNC) ? Qtrue : Qfalse;
 }
 
+#ifdef HAVE_FSYNC
+
 /*
  *  call-seq:
  *     ios.sync = boolean   -> boolean