diff --git a/ChangeLog b/ChangeLog
index fce9bb0421..59899439b6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Fri Jan 28 02:37:18 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
+
+	* re.c (rb_reg_raise): add GC guard to prevent intermediate
+	  variable from GC.
+
 Fri Jan 28 02:35:41 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
 
 	* hash.c (rb_hash_fetch_m): add GC guard to prevent intermediate
diff --git a/re.c b/re.c
index 2157ee8764..be815f527f 100644
--- a/re.c
+++ b/re.c
@@ -590,7 +590,7 @@ rb_reg_to_s(VALUE re)
 static void
 rb_reg_raise(const char *s, long len, const char *err, VALUE re)
 {
-    VALUE desc = rb_reg_desc(s, len, re);
+    volatile VALUE desc = rb_reg_desc(s, len, re);
 
     rb_raise(rb_eRegexpError, "%s: %s", err, RSTRING_PTR(desc));
 }