diff --git a/(EN)-First-Steps---Installation-and-Setup.md b/(EN)-First-Steps---Installation-and-Setup.md
index 8dd152c..5955ba1 100644
--- a/(EN)-First-Steps---Installation-and-Setup.md
+++ b/(EN)-First-Steps---Installation-and-Setup.md
@@ -50,7 +50,7 @@ This section covers the initial configuration. All important steps for installat
 > _**IMPORTANT!**_ in the block _**"CHANGE ME "**_ all values _**(device_name, wifi_ssid, wifi_password, nextion_update_url )**_ in the _**" "**_ must be replaced by your own values. It is also possible to work here with _**"!secret "**_.
 
 
-> _**ATTENTION!**_ for _**"device_name"**_ max. 15 characters _**[a-z], [0-9] and [_]**_ may be used and all must be _**"lowercase"**_. Furthermore, characters like _**[-], [SPECIAL CHARACTARS] and [SPACES]**_ are forbidden and will cause problems with the blueprint.
+> _**ATTENTION!**_ for _**"device_name"**_ max. 15 characters _**[a-z], [0-9] and [\_]**_ may be used and all must be _**"lowercase"**_. Furthermore, characters like _**[-], [SPECIAL CHARACTARS] and [SPACES]**_ are forbidden and will cause problems with the blueprint.
 
 **Example:** _**nspanel_kitchen**_