diff --git a/src/test/rustdoc/const-evalutation-ice.rs b/src/test/rustdoc/const-evalutation-ice.rs
index 9fed67ee583d..000ed709a8aa 100644
--- a/src/test/rustdoc/const-evalutation-ice.rs
+++ b/src/test/rustdoc/const-evalutation-ice.rs
@@ -10,8 +10,6 @@
 
 // Just check if we don't get an ICE for the _S type.
 
-#![feature(const_size_of)]
-
 use std::cell::Cell;
 use std::mem;