diff --git a/.config/sway/config b/.config/sway/config
index 75ce4bd..d0d8601 100644
--- a/.config/sway/config
+++ b/.config/sway/config
@@ -75,6 +75,12 @@ exec swayidle \
     lock '$lockcmd' \
     unlock 'pkill -9 swaylock'
 
+# xwayland version
+for_window [class="Firefox"] inhibit_idle fullscreen
+
+# wayland vesion
+for_window [app_id="firefox"] inhibit_idle fullscreen
+
 # Start autotiling script
 #exec autotiling