diff --git a/source/components/index.markdown b/source/components/index.markdown
index c6744bbd66..7ee296a27d 100644
--- a/source/components/index.markdown
+++ b/source/components/index.markdown
@@ -222,13 +222,13 @@ the manufacturers of these devices.
 
 Home Assistant integrates with a variety of third party Home Automation hubs and networks. It allows you to control the connected switches, lights and sensors via Home Assistant. Click on the following logos for setup instructions:
 
-[<img src='/images/supported_brands/z-wave.png' class='brand' />](/components/zwave.html)
-[<img src='/images/supported_brands/telldus_tellstick.png' class='brand' />](/components/tellstick.html)
-[<img src='/images/supported_brands/vera.png' class='brand' />](/components/vera.html)
-[<img src='/images/supported_brands/wink.png' class='brand' />](/components/wink.html)
-[<img src='/images/supported_brands/universal_devices.png' class='brand' />](/components/isy994.html)
-[<img src='/images/supported_brands/modbus.png' class='brand' />](/components/modbus.html)
-[<img src='/images/supported_brands/arduino.png' class='brand' />](/components/arduino.html)
+[<img src='/images/supported_brands/z-wave.png' class='brand' alt="Zwave" />](/components/zwave.html)
+[<img src='/images/supported_brands/telldus_tellstick.png' class='brand' alt="Tellstick" />](/components/tellstick.html)
+[<img src='/images/supported_brands/vera.png' class='brand' alt="Vera" />](/components/vera.html)
+[<img src='/images/supported_brands/wink.png' class='brand' alt="Wink" />](/components/wink.html)
+[<img src='/images/supported_brands/universal_devices.png' class='brand' alt="ISY994" />](/components/isy994.html)
+[<img src='/images/supported_brands/modbus.png' class='brand' alt="Modbus" />](/components/modbus.html)
+[<img src='/images/supported_brands/arduino.png' class='brand' alt="Arduino" />](/components/arduino.html)
 
 <p class='note'>
 Support for these devices is provided by the Home Assistant community and not