diff --git a/compiler/rustc_macros/src/diagnostics/subdiagnostic.rs b/compiler/rustc_macros/src/diagnostics/subdiagnostic.rs
index 7eb170ec236a..5907e268e91b 100644
--- a/compiler/rustc_macros/src/diagnostics/subdiagnostic.rs
+++ b/compiler/rustc_macros/src/diagnostics/subdiagnostic.rs
@@ -535,7 +535,7 @@ pub(crate) fn into_tokens(&mut self) -> Result<TokenStream, DiagnosticDeriveErro
         let mut calls = TokenStream::new();
         for (kind, messages) in kind_messages {
             let message = format_ident!("__message");
-            let message_stream = messages.diag_message(None);
+            let message_stream = messages.diag_message(Some(self.variant));
             calls.extend(quote! { let #message = #diag.eagerly_translate(#message_stream); });
 
             let name = format_ident!("{}{}", if span_field.is_some() { "span_" } else { "" }, kind);