diff --git a/scripts/xflock4 b/scripts/xflock4
index d2eb230..23808cd 100644
--- a/scripts/xflock4
+++ b/scripts/xflock4
@@ -42,7 +42,7 @@ for lock_cmd in \
     if command -v -- $1 >/dev/null 2>&1; then
         $lock_cmd >/dev/null 2>&1 &
 	# turn off display backlight:
-	xset dpms force off
+	sleep 1; xset dpms force off
         exit
     fi
 done