diff --git a/ChangeLog b/ChangeLog
index 8cc16c857a..f4677b5dc4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Sun Dec  8 14:55:12 2013  Kazuki Tsujimoto  <kazuki@callcc.net>
+
+	* array.c (rb_ary_shuffle_bang, rb_ary_sample): rename local variables.
+
 Sun Dec  8 13:59:38 2013  Kazuki Tsujimoto  <kazuki@callcc.net>
 
 	* array.c (rb_ary_shuffle_bang, rb_ary_sample): check
diff --git a/array.c b/array.c
index 12469090be..9a93d7f5f7 100644
--- a/array.c
+++ b/array.c
@@ -4438,10 +4438,10 @@ rb_ary_shuffle_bang(int argc, VALUE *argv, VALUE ary)
     }
 
     if (OPTHASH_GIVEN_P(opts)) {
-	VALUE random;
-	rb_get_kwargs(opts, keyword_ids, 0, 1, &random);
-	if (random != Qundef) {
-	    randgen = random;
+	VALUE rnd;
+	rb_get_kwargs(opts, keyword_ids, 0, 1, &rnd);
+	if (rnd != Qundef) {
+	    randgen = rnd;
 	}
     }
     rb_check_arity(argc, 0, 0);
@@ -4525,10 +4525,10 @@ rb_ary_sample(int argc, VALUE *argv, VALUE ary)
     }
 
     if (OPTHASH_GIVEN_P(opts)) {
-	VALUE random;
-	rb_get_kwargs(opts, keyword_ids, 0, 1, &random);
-	if (random != Qundef) {
-	    randgen = random;
+	VALUE rnd;
+	rb_get_kwargs(opts, keyword_ids, 0, 1, &rnd);
+	if (rnd != Qundef) {
+	    randgen = rnd;
 	}
     }
     len = RARRAY_LEN(ary);