diff --git a/ChangeLog b/ChangeLog
index 0f3549a38b..16978f7b33 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Wed Jan 21 15:43:19 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* enumerator.c (inspect_enumerator, yielder_new_i): added
+	  prototypes to suppress warnings due to a bug of VC6.
+
 Wed Jan 21 11:17:44 2009  Shugo Maeda  <shugo@ruby-lang.org>
 
 	* variable.c (rb_mod_remove_cvar): fixed rb_mod_remove_cvar() to
diff --git a/enumerator.c b/enumerator.c
index f33dbb7e12..1521e58ddd 100644
--- a/enumerator.c
+++ b/enumerator.c
@@ -575,6 +575,7 @@ enumerator_rewind(obj)
     }
 }
 
+static VALUE inspect_enumerator _((VALUE obj, VALUE dummy, int));
 static VALUE
 inspect_enumerator(obj, dummy, recur)
     VALUE obj, dummy;
@@ -726,6 +727,7 @@ yielder_yield(obj, args)
     return obj;
 }
 
+static VALUE yielder_new_i _((VALUE));
 static VALUE
 yielder_new_i(dummy)
     VALUE dummy;