diff --git a/src/librustc/lint/builtin.rs b/src/librustc/lint/builtin.rs
index ae537e557e7d0..41a4dd3657479 100644
--- a/src/librustc/lint/builtin.rs
+++ b/src/librustc/lint/builtin.rs
@@ -1984,7 +1984,7 @@ declare_lint! {
 
 declare_lint! {
     pub UNUSED_FEATURES,
-    Deny,
+    Warn,
     "unused or unknown features found in crate-level #[feature] directives"
 }