diff --git a/ChangeLog b/ChangeLog
index 1c041a0ca7..44ae5b4d48 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Fri Jun 13 21:55:48 2008  Tadayoshi Funaba  <tadf@dotrb.org>
+
+	* rational.c (nurat_equal_p): Rational(0,x) and 0 are equivalent,
+	  anyway.
+
 Fri Jun 13 21:26:39 2008  Tadayoshi Funaba  <tadf@dotrb.org>
 
 	* complex.c (string_to_c, nucomp_s_convert): preserve the current
diff --git a/rational.c b/rational.c
index d24195ac14..c81b89a4a7 100644
--- a/rational.c
+++ b/rational.c
@@ -865,6 +865,9 @@ nurat_equal_p(VALUE self, VALUE other)
 	{
 	    get_dat1(self);
 
+	    if (f_zero_p(dat->num) && f_zero_p(other))
+		return Qtrue;
+
 	    if (!FIXNUM_P(dat->den))
 		return Qfalse;
 	    if (FIX2LONG(dat->den) != 1)
@@ -879,6 +882,9 @@ nurat_equal_p(VALUE self, VALUE other)
 	{
 	    get_dat2(self, other);
 
+	    if (f_zero_p(adat->num) && f_zero_p(bdat->num))
+		return Qtrue;
+
 	    return f_boolcast(f_equal_p(adat->num, bdat->num) &&
 			      f_equal_p(adat->den, bdat->den));
 	}