diff --git a/webapp/src/components/ManageAssetPage/Sell/Sell.tsx b/webapp/src/components/ManageAssetPage/Sell/Sell.tsx
index 4cc447106d..a9f75e2644 100644
--- a/webapp/src/components/ManageAssetPage/Sell/Sell.tsx
+++ b/webapp/src/components/ManageAssetPage/Sell/Sell.tsx
@@ -86,7 +86,10 @@ const Sell = (props: Props) => {
               {t('manage_asset_page.sell.expiration_date')}
             </div>
             <div className={styles.columnContent}>
-              {intlFormat(order.expiresAt)}
+              {intlFormat(
+                order.expiresAt *
+                  (order.expiresAt.toString().length === 10 ? 1000 : 1)
+              )}
             </div>
           </div>
         </div>
diff --git a/webapp/src/components/Modals/SellModal/SellModal.tsx b/webapp/src/components/Modals/SellModal/SellModal.tsx
index 3d589bb3eb..ab8adf767b 100644
--- a/webapp/src/components/Modals/SellModal/SellModal.tsx
+++ b/webapp/src/components/Modals/SellModal/SellModal.tsx
@@ -71,11 +71,22 @@ const SellModal = ({
     isUpdate ? ethers.utils.formatEther(order!.price) : ''
   )
 
-  const [expiresAt, setExpiresAt] = useState(
-    isUpdate && order!.expiresAt && isValid(order!.expiresAt)
-      ? formatDate(addDays(order!.expiresAt, 1), INPUT_FORMAT)
-      : getDefaultExpirationDate()
-  )
+  const [expiresAt, setExpiresAt] = useState(() => {
+    let exp = order?.expiresAt
+
+    if (isUpdate && exp) {
+      // If the order's expiration is in seconds, convert it to milliseconds
+      if (exp.toString().length === 10) {
+        exp = exp * 1000
+      }
+
+      if (isValid(exp)) {
+        return formatDate(addDays(exp, 1), INPUT_FORMAT)
+      }
+    }
+
+    return getDefaultExpirationDate()
+  })
 
   const parsedValueToConfirm = parseFloat(price).toString()