diff --git a/usr/share/archboot/installer/setup b/usr/share/archboot/installer/setup
index 092b673e1..15ea5187e 100755
--- a/usr/share/archboot/installer/setup
+++ b/usr/share/archboot/installer/setup
@@ -1953,6 +1953,7 @@ auto_network()
 # change mkinitcpio.conf to use lzma compression by default!
 mkinitcpio_lzma()
 {
+  sed -i -e 's:^#COMPRESSION=\"lzma\":COMPRESSION=\"lzma\"#g' $DESTDIR/etc/mkinitcpio.conf
   sed -i -e 's#^COMPRESSION=.*#COMPRESSION=\"lzma\"#g' $DESTDIR/etc/mkinitcpio.conf
 }