diff --git a/ChangeLog b/ChangeLog
index 5527d536af..8be7183622 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Tue Jun 10 17:30:19 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* include/ruby/intern.h (rb_obj_instance_exec, rb_mod_module_exec):
+	  added prototypes.
+
 Tue Jun 10 17:00:29 2008  wanabe  <s.wanabe@gmail.com>
 
 	* util.c (ruby_strtod): ruby_strtod don't allow a trailing
diff --git a/include/ruby/intern.h b/include/ruby/intern.h
index bbaa5acaa3..18f6ac9e1d 100644
--- a/include/ruby/intern.h
+++ b/include/ruby/intern.h
@@ -257,7 +257,9 @@ VALUE rb_apply(VALUE, ID, VALUE);
 void rb_backtrace(void);
 ID rb_frame_this_func(void);
 VALUE rb_obj_instance_eval(int, VALUE*, VALUE);
+VALUE rb_obj_instance_exec(int, VALUE*, VALUE);
 VALUE rb_mod_module_eval(int, VALUE*, VALUE);
+VALUE rb_mod_module_exec(int, VALUE*, VALUE);
 void rb_load(VALUE, int);
 void rb_load_protect(VALUE, int, int*);
 NORETURN(void rb_jump_tag(int));