diff --git a/src/librustc/middle/typeck/check/mod.rs b/src/librustc/middle/typeck/check/mod.rs
index b9e96c78533..230d8e95d8f 100644
--- a/src/librustc/middle/typeck/check/mod.rs
+++ b/src/librustc/middle/typeck/check/mod.rs
@@ -2028,7 +2028,7 @@ fn try_overloaded_call(fcx: &FnCtxt,
             span_err!(fcx.tcx().sess, call_expression.span, E0056,
                 "overloaded calls are experimental");
             span_note!(fcx.tcx().sess, call_expression.span,
-                "add `#[feature(overloaded_calls)]` to \
+                "add `#![feature(overloaded_calls)]` to \
                 the crate attributes to enable");
         }