From ee80ccf7a64122506ef91bd630e73d8af8a2c1f8 Mon Sep 17 00:00:00 2001
From: Shay Levy <levyshay1@gmail.com>
Date: Sun, 10 Oct 2021 22:39:34 +0300
Subject: [PATCH] Fix Shelly button filter empty event (#57427)

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

diff --git a/homeassistant/components/shelly/__init__.py b/homeassistant/components/shelly/__init__.py
index 87896f4380b..cb48f34cba6 100644
--- a/homeassistant/components/shelly/__init__.py
+++ b/homeassistant/components/shelly/__init__.py
@@ -295,7 +295,7 @@ class BlockDeviceWrapper(update_coordinator.DataUpdateCoordinator):
                 if block.type != "device":
                     continue
 
-                if block.wakeupEvent[0] == "button":
+                if len(block.wakeupEvent) == 1 and block.wakeupEvent[0] == "button":
                     self._last_input_events_count[1] = -1
 
                 break