Just a quick how-to if you, like me, hate the new icon.

Find out where Discord is installed

On KDE Plasma, right-click on Discord in the app launcher and click “Edit Application…”. Switch over to the “Application” tab, and look at the “Command: “ field. The file it’s pointing to may be a symlink, so run ls -l path, for me path was /usr/bin/discord:

$ ls -l /usr/bin/discord
lrwxrwxrwx 1 root root 20 09-22 21:03 /usr/bin/discord -> /opt/discord/Discord

So in my case, the directory where my Discord client is installed it /opt/discord/.

Replace the icon

Get the icon from here and put it in an accessible location like your home directory.

Then, open a terminal in your installation directory. Let’s back up the current icon:

sudo mv discord.png discord-new.png

Now let’s actually replace the icon:

sudo mv path_to_new_icon discord.png

Replace path_to_new_icon with wherever you put the downloaded icon, if you put it in your home that’d be /home/$USER/discord.png.

Refresh icon cache

You’re basically done: you just need to refresh the icon cache. Log out, then log back in. If that doesn’t work, restart. If that doesn’t work, search for “[YOUR_DESKTOP_ENVIRONMENT] refresh/clear icon cache”.

That’s about it!