diff --git a/ChangeLog b/ChangeLog
index f3d5e49d66..e6ff9bc07a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Wed Sep 24 19:01:45 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* string.c (rb_str_strip_bang): workaround for VC++8 x64.
+
 Wed Sep 24 17:44:44 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* complex.c (Init_Complex), rational.c (Init_Rational): undefines
diff --git a/string.c b/string.c
index 33d03e13c6..a474856808 100644
--- a/string.c
+++ b/string.c
@@ -5862,7 +5862,7 @@ rb_str_rstrip_bang(VALUE str)
 
     if (single_byte_optimizable(str)) {
 	/* remove trailing spaces or '\0's */
-	while (s < t && (t[-1] == '\0' || rb_enc_isspace(*(t-1), enc))) t--;
+	while (s < t && (*(t-1) == '\0' || rb_enc_isspace(*(t-1), enc))) t--;
     }
     else {
 	char *tp;