diff --git a/default/hypr/windows.conf b/default/hypr/windows.conf
index bc665b2..d66b7bb 100644
--- a/default/hypr/windows.conf
+++ b/default/hypr/windows.conf
@@ -7,5 +7,8 @@ windowrule = opacity 0.97 0.9, class:.*
 # Fix some dragging issues with XWayland
 windowrule = nofocus,class:^$,title:^$,xwayland:1,floating:1,fullscreen:0,pinned:0
 
+# Prevent screensaver/lock while running apps fullscreen
+windowrule = idleinhibit fullscreen, class:.*
+
 # App-specific tweaks
 source = ~/.local/share/omarchy/default/hypr/apps.conf