diff --git a/ChangeLog b/ChangeLog
index 92e61002d8..078efe4880 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Wed Sep 20 22:41:45 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* numeric.c (fix_mul): typo again.  patch from Tadashi Saito
+	  <shiba at mail2.accsnet.ne.jp>.  fixed: [ruby-core:08893]
+
 Wed Sep 20 09:49:40 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
 
 	* {bcc32,win32,wince}/Makefile.sub (INSTALLED_LIST): need to define
diff --git a/numeric.c b/numeric.c
index 1a7c098e7e..cab949babc 100644
--- a/numeric.c
+++ b/numeric.c
@@ -1989,7 +1989,7 @@ fix_mul(VALUE x, VALUE y)
 	if (FIXABLE(d)) return LONG2FIX(d);
 	return rb_ll2inum(d);
 #else
-#	define SQRT_LONG_MAX ((SIZEOF_VALUE)1<<((SIZEOF_VALUE*CHAR_BIT-1)/2))
+#	define SQRT_LONG_MAX ((SIGNED_VALUE)1<<((SIZEOF_VALUE*CHAR_BIT-1)/2))
 	/*tests if N*N would overflow*/
 #	define FIT_SQRT_LONG(n) (((n)<SQRT_LONG_MAX)&&((n)>=-SQRT_LONG_MAX))
 	if (FIT_SQRT_LONG(a) && FIT_SQRT_LONG(b))