diff --git a/ChangeLog b/ChangeLog
index 3ee4bd232f..c292d19ee5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Wed Aug 13 11:45:51 2008  Akinori MUSHA  <knu@iDaemons.org>
+
+	* vm_core.h: Declare rb_iseq_clone, which is used in class.c.
+
 Wed Aug 13 11:39:19 2008  Tanaka Akira  <akr@fsij.org>
 
 	* transcode.c (transcode_search_path): return the length of converter
diff --git a/vm_core.h b/vm_core.h
index f1a24e5f94..25017cdab8 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -507,6 +507,7 @@ VALUE rb_iseq_compile(VALUE src, VALUE file, VALUE line);
 VALUE ruby_iseq_disasm(VALUE self);
 VALUE ruby_iseq_disasm_insn(VALUE str, VALUE *iseqval, int pos, rb_iseq_t *iseq, VALUE child);
 const char *ruby_node_name(int node);
+VALUE rb_iseq_clone(VALUE iseqval, VALUE newcbase);
 
 RUBY_EXTERN VALUE rb_cISeq;
 RUBY_EXTERN VALUE rb_cRubyVM;