diff --git a/systemd/wallpaper@.timer b/systemd/wallpaper@.timer
index 412193d..6969762 100644
--- a/systemd/wallpaper@.timer
+++ b/systemd/wallpaper@.timer
@@ -3,5 +3,5 @@ Description=Wallpaper rotation for %I
 PartOf=graphical-session@%i.target
 
 [Timer]
-OnCalendar=hourly
+OnUnitActiveSec=1h
 RandomizedDelaySec=10m