diff --git a/src/librustc_borrowck/lib.rs b/src/librustc_borrowck/lib.rs
index db19a09deba..ffc5a3919b6 100644
--- a/src/librustc_borrowck/lib.rs
+++ b/src/librustc_borrowck/lib.rs
@@ -16,8 +16,8 @@
       html_favicon_url = "http://www.rust-lang.org/favicon.ico",
       html_root_url = "http://doc.rust-lang.org/nightly/")]
 
-#![feature(default_type_params, globs, if_let, import_shadowing, macro_rules, phase, quote)]
-#![feature(slicing_syntax, tuple_indexing, unsafe_destructor)]
+#![feature(default_type_params, globs, import_shadowing, macro_rules, phase, quote)]
+#![feature(slicing_syntax, unsafe_destructor)]
 #![feature(rustc_diagnostic_macros)]
 #![feature(unboxed_closures)]
 #![allow(non_camel_case_types)]