diff --git a/packages/tools/installer/scripts/installer b/packages/tools/installer/scripts/installer
index 5d0b338c79..6ef217e71b 100755
--- a/packages/tools/installer/scripts/installer
+++ b/packages/tools/installer/scripts/installer
@@ -246,7 +246,7 @@ function do_install_quick() {
             echo " " >> $TMPDIR/part1/extlinux.conf
             echo "LABEL linux" >> $TMPDIR/part1/extlinux.conf
             echo " KERNEL /KERNEL" >> $TMPDIR/part1/extlinux.conf
-            echo " APPEND boot=LABEL=$DISKLABEL_SYSTEM disk=LABEL=$DISKLABEL_STORAGE quiet" >> $TMPDIR/part1/extlinux.conf
+            echo " APPEND boot=LABEL=$DISKLABEL_SYSTEM disk=LABEL=$DISKLABEL_STORAGE $EXTLINUX_PARAMETERS quiet" >> $TMPDIR/part1/extlinux.conf
             sync
 
         # umount system partition, remove mountpoint
@@ -432,6 +432,7 @@ function do_poweroff() {
   DISKLABEL_SYSTEM="System"
   DISKLABEL_STORAGE="Storage"
   PARTSIZE_SYSTEM="16"          # Defaultsize of system partition (Cylinder: 16=132MB, 31=255MB)
+  EXTLINUX_PARAMETERS=""
   LOGFILE="$TMPDIR/install.log"
 
 # prepare temporary directory