diff --git a/ChangeLog b/ChangeLog
index 1bf49ce281fd60..2acf6822a8828b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Thu Oct 10 23:04:00 2013  Masaki Matsushita  <glass.saga@gmail.com>
+
+	* array.c (rb_ary_or): remove unused variables.
+
 Thu Oct 10 23:01:16 2013  Masaki Matsushita  <glass.saga@gmail.com>
 
 	* array.c (rb_ary_or): use rb_hash_keys().
diff --git a/array.c b/array.c
index fc2672bda8fc18..49e368932d6a0b 100644
--- a/array.c
+++ b/array.c
@@ -3999,9 +3999,7 @@ rb_ary_and(VALUE ary1, VALUE ary2)
 static VALUE
 rb_ary_or(VALUE ary1, VALUE ary2)
 {
-    VALUE hash, ary3, v;
-    st_data_t vv;
-    long i;
+    VALUE hash, ary3;
 
     ary2 = to_ary(ary2);
     hash = ary_add_hash(ary_make_hash(ary1), ary2);