diff --git a/ChangeLog b/ChangeLog
index a60dc10104..f920ca2ff3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Sun Sep 25 19:21:26 2016  Kazuki Tsujimoto  <kazuki@callcc.net>
+
+	* node.c (dump_array): remove duplicate header of NODE_ARRAY/
+	  NODE_VALUES.
+
 Sat Sep 24 22:26:20 2016  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* ext/extmk.rb (extract_makefile, extmake, configuration): store
diff --git a/node.c b/node.c
index 14f9856ba5..832190d0b2 100644
--- a/node.c
+++ b/node.c
@@ -140,7 +140,6 @@ dump_array(VALUE buf, VALUE indent, int comment, NODE *node)
 {
     int field_flag;
     const char *next_indent = default_indent;
-    D_NODE_HEADER(node);
     F_LONG(nd_alen, "length");
     F_NODE(nd_head, "element");
     while (node->nd_next && nd_type(node->nd_next) == NODE_ARRAY) {