diff --git a/clippy_lints/src/lib.rs b/clippy_lints/src/lib.rs
index 9665f53048ac..16155c4dba91 100644
--- a/clippy_lints/src/lib.rs
+++ b/clippy_lints/src/lib.rs
@@ -12,7 +12,6 @@
 #![cfg_attr(feature = "deny-warnings", deny(warnings))]
 #![feature(crate_visibility_modifier)]
 #![feature(concat_idents)]
-#![feature(result_map_or)]
 
 // FIXME: switch to something more ergonomic here, once available.
 // (Currently there is no way to opt into sysroot crates without `extern crate`.)
diff --git a/src/driver.rs b/src/driver.rs
index fda304afcbe1..4cdff7837887 100644
--- a/src/driver.rs
+++ b/src/driver.rs
@@ -1,5 +1,4 @@
 #![cfg_attr(feature = "deny-warnings", deny(warnings))]
-#![feature(result_map_or)]
 #![feature(rustc_private)]
 
 // FIXME: switch to something more ergonomic here, once available.