diff --git a/setup/debian-setup.md b/setup/debian-setup.md
index 373263f..356a6e3 100644
--- a/setup/debian-setup.md
+++ b/setup/debian-setup.md
@@ -85,11 +85,15 @@ Here's my personal Debian 12 Bookworm setup.
 - Flatseal
 	- `flatpak install flathub com.github.tchx84.Flatseal`
 - Firefox
+	- `flatpak install flathub org.mozilla.firefox`
 	- Change default zoom to 110%
 	- Enable HTTPS only
 	- Proxy DNS when using SOCKS v5
 	- Enable DNS over HTTPS
 	- In `about:config` set `browser.sessionstore.max_windows_undo` to 10.
+	- Use Wayland for correct fractional scaling:
+	  `sudo flatpak override --socket=wayland --env=MOZ_ENABLE_WAYLAND=1
+	  org.mozilla.firefox`
 - Go to settings -> `Region & Language` and install `Chinese (simplified)`.
 - VSCodium
 	- `flatpak install flathub com.vscodium.codium`
diff --git a/setup/ubuntu-setup.md b/setup/ubuntu-setup.md
index 8e7b50f..a5162ca 100644
--- a/setup/ubuntu-setup.md
+++ b/setup/ubuntu-setup.md
@@ -92,11 +92,15 @@ Here's my personal Ubuntu 22.10 setup.  (Make sure to enable Wayland on Nvidia!)
 - Flatseal
 	- `flatpak install flathub com.github.tchx84.Flatseal`
 - Firefox
+	- `flatpak install flathub org.mozilla.firefox`
 	- Change default zoom to 110%
 	- Enable HTTPS only
 	- Proxy DNS when using SOCKS v5
 	- Enable DNS over HTTPS
 	- In `about:config` set `browser.sessionstore.max_windows_undo` to 10.
+	- Use Wayland for correct fractional scaling:
+	  `sudo flatpak override --socket=wayland --env=MOZ_ENABLE_WAYLAND=1
+	  org.mozilla.firefox`
 - Go to settings -> `Region & Language` and install `Chinese (simplified)`.
 - VSCodium
 	- `flatpak install flathub com.vscodium.codium`