diff --git a/ChangeLog b/ChangeLog
index c6cb78f5b5..2fd02aad26 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,4 +1,6 @@
-Wed Jul 23 18:03:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+Wed Jul 23 18:04:42 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* ext/digest/digest.c (rb_digest_instance_inspect): consitifed.
 
 	* ext/dl/dl.c (rb_ary_to_ptr), ext/dl/ptr.c (rb_dlmem_delete):
 	  suppress warnings.
diff --git a/ext/digest/digest.c b/ext/digest/digest.c
index 0b910e8c47..69718d493b 100644
--- a/ext/digest/digest.c
+++ b/ext/digest/digest.c
@@ -266,7 +266,7 @@ rb_digest_instance_inspect(VALUE self)
 {
     VALUE str;
     size_t digest_len = 32;	/* about this size at least */
-    char *cname;
+    const char *cname;
 
     cname = rb_obj_classname(self);