diff --git a/ChangeLog b/ChangeLog
index 88bf60d648..53184d8099 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Thu Feb  4 03:00:59 2010  Yusuke Endoh  <mame@tsg.ne.jp>
+
+	* ext/bigdecimal/bigdecimal.c (BigDecimal_DoDivmod): get red of
+	  floating point exception.
+
 Thu Feb  4 01:24:01 2010  Yusuke Endoh  <mame@tsg.ne.jp>
 
 	* ext/bigdecimal/bigdecimal.c (BigDecimal_DoDivmod): fix infinity
diff --git a/ext/bigdecimal/bigdecimal.c b/ext/bigdecimal/bigdecimal.c
index 5450f7594a..8e85fdf1f8 100644
--- a/ext/bigdecimal/bigdecimal.c
+++ b/ext/bigdecimal/bigdecimal.c
@@ -958,7 +958,6 @@ BigDecimal_DoDivmod(VALUE self, VALUE r, Real **div, Real **mod)
     }
     if(VpIsInf(b)) {
        GUARD_OBJ(d,VpCreateRbObject(1, "0"));
-       VpSetSign(d,(S_INT)(VpGetSign(a) == VpGetSign(b) ? 1 : -1));
        *div = d;
        *mod = a;
        return Qtrue;