diff --git a/Running-programs-natively-under-Wayland.md b/Running-programs-natively-under-Wayland.md
index 72b929a..6d8971d 100644
--- a/Running-programs-natively-under-Wayland.md
+++ b/Running-programs-natively-under-Wayland.md
@@ -6,6 +6,8 @@ You can disable Xwayland (X clients under Wayland) support by specifying `xwayla
 
 Wayland will be selected by default. Do **not** set `GDK_BACKEND`, it will break apps (e.g. Chromium and Electron).
 
+Experimental Wayland support in Firefox can be enabled with `MOZ_ENABLE_WAYLAND=1`.
+
 ## Qt5
 
 Wayland is used by default if `XDG_SESSION_TYPE=wayland` is set (ie. if you use a display manager). If not: