diff --git a/ChangeLog b/ChangeLog
index 850778091c..aad19a744a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Thu Jul 18 15:42:01 2013  Koichi Sasada  <ko1@atdot.net>
+
+	* include/ruby/ruby.h: fix spell miss.
+
 Thu Jul 18 15:11:11 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* include/ruby/ruby.h (ruby_safe_level_4): get rid of special
diff --git a/include/ruby/ruby.h b/include/ruby/ruby.h
index 7812ee202a..974bfd97fd 100644
--- a/include/ruby/ruby.h
+++ b/include/ruby/ruby.h
@@ -1302,8 +1302,8 @@ rb_obj_written(VALUE a, VALUE oldv, VALUE b, const char *filename, int line)
 static inline VALUE
 rb_obj_write(VALUE a, VALUE *slot, VALUE b, const char *filename, int line)
 {
-#ifdef RGENGC_LOGGING_WRIET
-    RGENGC_LOGGING_WRIET(a, slot, b, filename, line);
+#ifdef RGENGC_LOGGING_WRITE
+    RGENGC_LOGGING_WRITE(a, slot, b, filename, line);
 #endif
 
     *slot = b;