diff --git a/ext/objspace/objspace.c b/ext/objspace/objspace.c
index e5e3766ab7..f7d77f355d 100644
--- a/ext/objspace/objspace.c
+++ b/ext/objspace/objspace.c
@@ -442,7 +442,6 @@ count_nodes(int argc, VALUE *argv, VALUE os)
 		COUNT_NODE(NODE_ARGSCAT);
 		COUNT_NODE(NODE_ARGSPUSH);
 		COUNT_NODE(NODE_SPLAT);
-		COUNT_NODE(NODE_TO_ARY);
 		COUNT_NODE(NODE_BLOCK_ARG);
 		COUNT_NODE(NODE_BLOCK_PASS);
 		COUNT_NODE(NODE_DEFN);
diff --git a/node.c b/node.c
index b574d94f71..511255db4e 100644
--- a/node.c
+++ b/node.c
@@ -1035,7 +1035,6 @@ dump_node(VALUE buf, VALUE indent, int comment, NODE *node)
 	return;
 
       case NODE_ARGS_AUX:
-      case NODE_TO_ARY:
       case NODE_BLOCK_ARG:
       case NODE_BMETHOD:
       case NODE_LAST:
@@ -1172,7 +1171,6 @@ rb_gc_mark_node(NODE *obj)
       case NODE_YIELD:
       case NODE_COLON2:
       case NODE_SPLAT:
-      case NODE_TO_ARY:
 	return RNODE(obj)->u1.value;
 
       case NODE_SCOPE:	/* 2,3 */
diff --git a/node.h b/node.h
index ef7bb9eeb4..9fc4b47285 100644
--- a/node.h
+++ b/node.h
@@ -168,8 +168,6 @@ enum node_type {
 #define NODE_ARGSPUSH    NODE_ARGSPUSH
     NODE_SPLAT,
 #define NODE_SPLAT       NODE_SPLAT
-    NODE_TO_ARY,
-#define NODE_TO_ARY      NODE_TO_ARY
     NODE_BLOCK_ARG,
 #define NODE_BLOCK_ARG   NODE_BLOCK_ARG
     NODE_BLOCK_PASS,
@@ -426,7 +424,6 @@ typedef struct RNode {
 #define NEW_ARGSCAT(a,b) NEW_NODE(NODE_ARGSCAT,a,b,0)
 #define NEW_ARGSPUSH(a,b) NEW_NODE(NODE_ARGSPUSH,a,b,0)
 #define NEW_SPLAT(a) NEW_NODE(NODE_SPLAT,a,0,0)
-#define NEW_TO_ARY(a) NEW_NODE(NODE_TO_ARY,a,0,0)
 #define NEW_BLOCK_ARG(v) NEW_NODE(NODE_BLOCK_ARG,v,0,local_cnt(v))
 #define NEW_BLOCK_PASS(b) NEW_NODE(NODE_BLOCK_PASS,0,b,0)
 #define NEW_ALIAS(n,o) NEW_NODE(NODE_ALIAS,n,o,0)