diff --git a/lnbits/extensions/lnurldevice/models.py b/lnbits/extensions/lnurldevice/models.py
index ace22ca1..29d49d3f 100644
--- a/lnbits/extensions/lnurldevice/models.py
+++ b/lnbits/extensions/lnurldevice/models.py
@@ -18,7 +18,7 @@ class createLnurldevice(BaseModel):
     device: str
     profit: float
     amount: int
-    pin: int
+    pin: int = 0
     profit1: float = 0
     amount1: int = 0
     pin1: int = 0
diff --git a/lnbits/extensions/lnurldevice/views.py b/lnbits/extensions/lnurldevice/views.py
index d5d047af..f5fd598c 100644
--- a/lnbits/extensions/lnurldevice/views.py
+++ b/lnbits/extensions/lnurldevice/views.py
@@ -107,4 +107,4 @@ async def updater(lnurldevice_id, lnurldevice_pin, lnurldevice_amount):
     lnurldevice = await get_lnurldevice(lnurldevice_id)
     if not lnurldevice:
         return
-    return await manager.send_personal_message(f"pin:{lnurldevice_pin},amount:{lnurldevice_amount}", lnurldevice_id)
+    return await manager.send_personal_message(f"{lnurldevice_pin}-{lnurldevice_amount}", lnurldevice_id)