diff --git a/examples/ItalianLabels.tsx b/examples/ItalianLabels.tsx
index 307e76367..d89778323 100644
--- a/examples/ItalianLabels.tsx
+++ b/examples/ItalianLabels.tsx
@@ -10,7 +10,7 @@ export function ItalianLabels() {
       locale={it}
       labels={{
         labelDayButton: (date, { today, selected }) => {
-          let label = format(date, "PPPP");
+          let label = format(date, "PPPP", { locale: it });
           if (today) label = `Oggi, ${label}`;
           if (selected) label = `${label}, selezionato`;
           return label;
diff --git a/website/docs/docs/translation.mdx b/website/docs/docs/translation.mdx
index 106bb02a8..37324239c 100644
--- a/website/docs/docs/translation.mdx
+++ b/website/docs/docs/translation.mdx
@@ -38,7 +38,7 @@ function ItalianLabels() {
       locale={it}
       labels={{
         labelDayButton: (date, { today, selected }) => {
-          let label = format(date, "PPPP");
+          let label = format(date, "PPPP", { locale: it });
           if (today) label = `Oggi, ${label}`;
           if (selected) label = `${label}, selezionato`;
           return label;