diff --git a/ChangeLog b/ChangeLog
index d92431ebb3..207982453b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Sun Feb  5 21:05:34 2006  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
+
+	* numeric.c (fix_to_s): removed workaround for radix 2. Historically,
+	  rb_fix2str can only handle radix 8, 10, 16. (Rev1.37) But for now,
+	  it can handle radix 2..36. [ruby-Bugs#3438]
+
 Sun Feb  5 18:55:08 2006  Minero Aoki  <aamine@loveruby.net>
 
 	* lib/net/http.rb: imported from trunk, rev 1.129
diff --git a/numeric.c b/numeric.c
index 29fb9f83f2..4c8bacdaf6 100644
--- a/numeric.c
+++ b/numeric.c
@@ -1951,10 +1951,6 @@ fix_to_s(argc, argv, x)
     if (argc == 0) base = 10;
     else base = NUM2INT(b);
 
-    if (base == 2) {
-	/* rb_fix2str() does not handle binary */
-	return rb_big2str(rb_int2big(FIX2LONG(x)), 2);
-    }
     return rb_fix2str(x, base);
 }