diff --git a/scripts/lock b/scripts/lock
index d8eabb4..f485b0d 100755
--- a/scripts/lock
+++ b/scripts/lock
@@ -6,6 +6,6 @@ test $# -eq 1 && icon=$1
 
 scrot $tmpbg
 gm convert $tmpbg -scale 10% -scale 1000% $tmpbg
-gm composite -resize 256x256^ -gravity center "$icon" $tmpbg $tmpbg
+gm composite -filter point -resize 48x48 -gravity center "$icon" $tmpbg $tmpbg
 i3lock -u -i $tmpbg 2>/dev/null
 rm $tmpbg