1 files changed, 0 insertions, 1 deletions
diff --git a/node.h b/node.h
index 488a8ce2ef..b18d96357a 100644
--- a/node.h
+++ b/node.h
@@ -479,7 +479,6 @@ void rb_ast_mark(rb_ast_t*);
 void rb_ast_dispose(rb_ast_t*);
 void rb_ast_free(rb_ast_t*);
 void rb_ast_add_mark_object(rb_ast_t*, VALUE);
-void rb_ast_delete_mark_object(rb_ast_t*, VALUE);
 NODE *rb_ast_newnode(rb_ast_t*);
 void rb_ast_delete_node(rb_ast_t*, NODE *n);