diff --git a/components/NamesEntry.vue b/components/NamesEntry.vue
index 26539eaf7..7d18b083c 100644
--- a/components/NamesEntry.vue
+++ b/components/NamesEntry.vue
@@ -16,7 +16,7 @@ const namedaysString = (name: Name) => {
     }
 
     const days = name.namedays.map((d) => {
-        const [month, day] = d.split('-');
+        const [month, day] = d.split('-').map(s => parseInt(s, 10));
         return translator.translate(`calendar.dates.${month}`, { day });
     });