2 files changed, 4 insertions, 4 deletions
diff --git a/compiler/rustc_errors/src/diagnostic.rs b/compiler/rustc_errors/src/diagnostic.rs
index 83e6a751394..909ed566f64 100644
--- a/compiler/rustc_errors/src/diagnostic.rs
+++ b/compiler/rustc_errors/src/diagnostic.rs
@@ -821,9 +821,9 @@ impl Diagnostic {
     pub fn set_arg(
         &mut self,
         name: impl Into<Cow<'static, str>>,
-        arg: DiagnosticArgValue<'static>,
+        arg: impl IntoDiagnosticArg,
     ) -> &mut Self {
-        self.args.push((name.into(), arg));
+        self.args.push((name.into(), arg.into_diagnostic_arg()));
         self
     }
 
diff --git a/compiler/rustc_errors/src/diagnostic_builder.rs b/compiler/rustc_errors/src/diagnostic_builder.rs
index 96b730c2baa..53ad6e5a0ed 100644
--- a/compiler/rustc_errors/src/diagnostic_builder.rs
+++ b/compiler/rustc_errors/src/diagnostic_builder.rs
@@ -1,4 +1,4 @@
-use crate::diagnostic::DiagnosticArgValue;
+use crate::diagnostic::IntoDiagnosticArg;
 use crate::{Diagnostic, DiagnosticId, DiagnosticMessage, DiagnosticStyledString, ErrorGuaranteed};
 use crate::{Handler, Level, MultiSpan, StashKey};
 use rustc_lint_defs::Applicability;
@@ -528,7 +528,7 @@ impl<'a, G: EmissionGuarantee> DiagnosticBuilder<'a, G> {
     forward!(pub fn set_arg(
         &mut self,
         name: impl Into<Cow<'static, str>>,
-        arg: DiagnosticArgValue<'static>,
+        arg: impl IntoDiagnosticArg,
     ) -> &mut Self);
 
     forward!(pub fn subdiagnostic(