From 7b33ed11c2e5257ce1f040a00ae3315edf708a5b Mon Sep 17 00:00:00 2001
From: Marc Mueller <30130371+cdce8p@users.noreply.github.com>
Date: Sun, 25 Apr 2021 20:28:40 +0200
Subject: [PATCH] Fix missing default value in fritz scan_devices (#49668)

---
 homeassistant/components/fritz/common.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/homeassistant/components/fritz/common.py b/homeassistant/components/fritz/common.py
index f05fea0dcd4..1958dd51f38 100644
--- a/homeassistant/components/fritz/common.py
+++ b/homeassistant/components/fritz/common.py
@@ -135,7 +135,7 @@ class FritzBoxTools:
         """Retrieve latest information from the FRITZ!Box."""
         return self.fritzhosts.get_hosts_info()
 
-    def scan_devices(self, now: datetime | None) -> None:
+    def scan_devices(self, now: datetime | None = None) -> None:
         """Scan for new devices and return a list of found device ids."""
         _LOGGER.debug("Checking devices for FRITZ!Box router %s", self.host)