diff --git a/ChangeLog b/ChangeLog
index 5e9ac7fe55..7d152b0ec3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Tue Jul 29 21:38:08 2008  Yusuke Endoh  <mame@tsg.ne.jp>
+
+	* ext/bigdecimal/bigdecimal.c (Init_bigdecimal): fix typo.
+
 Tue Jul 29 21:35:59 2008  Yusuke Endoh  <mame@tsg.ne.jp>
 
 	* test/etc/test_etc.rb (test_passwd): age field may be string under
diff --git a/ext/bigdecimal/bigdecimal.c b/ext/bigdecimal/bigdecimal.c
index 614032953c..af3d644858 100644
--- a/ext/bigdecimal/bigdecimal.c
+++ b/ext/bigdecimal/bigdecimal.c
@@ -1844,7 +1844,7 @@ Init_bigdecimal(void)
 
     /* 
      * 0x01: Determines what happens when the result of a computation is an
-     * underflow (a result too large to be represented). See BigDecimal.mode.
+     * overflow (a result too large to be represented). See BigDecimal.mode.
      */
     rb_define_const(rb_cBigDecimal, "EXCEPTION_OVERFLOW",INT2FIX(VP_EXCEPTION_OVERFLOW));