diff --git a/diskimage_builder/elements/bootloader/finalise.d/50-bootloader b/diskimage_builder/elements/bootloader/finalise.d/50-bootloader
index 5e8c2d28c..99486a487 100755
--- a/diskimage_builder/elements/bootloader/finalise.d/50-bootloader
+++ b/diskimage_builder/elements/bootloader/finalise.d/50-bootloader
@@ -187,24 +187,13 @@ function install_grub2 {
 
     echo "GRUB_CMDLINE_LINUX_DEFAULT=\"${GRUB_CMDLINE_LINUX_DEFAULT}\"" >>/etc/default/grub
     echo 'GRUB_SERIAL_COMMAND="serial --speed=115200 --unit=0 --word=8 --parity=no --stop=1"' >>/etc/default/grub
+    sed -i -e "s/\(^GRUB_CMDLINE_LINUX.*\)\"$/\1 ${DIB_BOOTLOADER_DEFAULT_CMDLINE}\"/" /etc/default/grub
+
     if type grub2-mkconfig >/dev/null; then
         GRUB_MKCONFIG="grub2-mkconfig -o $GRUB_CFG"
     else
         GRUB_MKCONFIG="grub-mkconfig -o $GRUB_CFG"
     fi
-    DISTRO_NAME=${DISTRO_NAME:-}
-    case $DISTRO_NAME in
-        'ubuntu'|'debian')
-            sed -i -e "s/\(^GRUB_CMDLINE_LINUX.*\)\"$/\1 ${DIB_BOOTLOADER_DEFAULT_CMDLINE}\"/" /etc/default/grub
-            GRUB_MKCONFIG=update-grub
-        ;;
-        'fedora'|'centos7'|'centos')
-            echo "GRUB_CMDLINE_LINUX=\"${DIB_BOOTLOADER_DEFAULT_CMDLINE}\"" >>/etc/default/grub
-        ;;
-        'opensuse')
-            sed -i -e "s/\(^GRUB_CMDLINE_LINUX.*\)\"$/\1 ${DIB_BOOTLOADER_DEFAULT_CMDLINE}\"/" /etc/default/grub
-        ;;
-    esac
 
     # os-prober leaks /dev/sda into config file in dual-boot host
     # Disable grub-os-prober to avoid the issue  while running