diff --git a/src/librustc_typeck/diagnostics.rs b/src/librustc_typeck/diagnostics.rs
index 7dd850180d442..be012d8976f6c 100644
--- a/src/librustc_typeck/diagnostics.rs
+++ b/src/librustc_typeck/diagnostics.rs
@@ -458,7 +458,7 @@ Rust only supports variadic parameters for interoperability with C code in its
 FFI. As such, variadic parameters can only be used with functions which are
 using the C ABI. Examples of erroneous code:
 
-```compile_fail,E0045
+```compile_fail
 #![feature(unboxed_closures)]
 
 extern "rust-call" { fn foo(x: u8, ...); }