diff --git a/resources/js/pages/Invoices.vue b/resources/js/pages/Invoices.vue
index e9dbcbb..ab938e5 100644
--- a/resources/js/pages/Invoices.vue
+++ b/resources/js/pages/Invoices.vue
@@ -36,7 +36,7 @@ onMounted(async () => {
         const invoiceBeforeThisYearResponse = await axios.get('/api/invoices/summaryBeforeThisYear')
         invoicesData.value = invoicesData.value.concat(invoiceBeforeThisYearResponse.data as Invoice[])
         invoicesData.value = invoicesData.value.sort(
-            (a, b) => new Date(a.invoiceDate) - new Date(b.invoiceDate)
+            (a, b) => new Date(a.invoiceDate).getTime() - new Date(b.invoiceDate).getTime()
         )
     } catch (error) {
         console.error('Fehler beim Laden der Daten:', error)