diff --git a/ChangeLog b/ChangeLog
index 896e278b4e..dc1b6b99d7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Thu Jun 12 17:11:24 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
+
+	* regint.h: undefine USE_CAPTURE_HISTORY which is mentioned as
+	  unsupported in the Onigiruma document.
+
 Thu Jun 12 13:36:54 2008  Tanaka Akira  <akr@fsij.org>
 
 	* include/ruby/ruby.h (rb_intern): use rb_intern2 with strlen for
diff --git a/regint.h b/regint.h
index 09f3c29ee2..660e97542c 100644
--- a/regint.h
+++ b/regint.h
@@ -90,7 +90,7 @@
 #undef ONIG_ESCAPE_UCHAR_COLLISION
 #endif
 #undef USE_MATCH_RANGE_IS_COMPLETE_RANGE
-#define USE_CAPTURE_HISTORY
+#undef USE_CAPTURE_HISTORY
 #define USE_VARIABLE_META_CHARS
 #define USE_WORD_BEGIN_END          /* "\<": word-begin, "\>": word-end */
 #define USE_POSIX_REGION_OPTION     /* needed for POSIX API support */