diff --git a/scripts/dkms.mkconf b/scripts/dkms.mkconf
index 9d12a8c3b3fd..408322fa124a 100755
--- a/scripts/dkms.mkconf
+++ b/scripts/dkms.mkconf
@@ -1,123 +1,115 @@
 #!/bin/sh
 
 PROG=$0
 
 pkgcfg=/etc/sysconfig/zfs
 
 while getopts "n:v:c:f:" opt; do
 	case $opt in
 		n) pkgname=$OPTARG  ;;
 		v) pkgver=$OPTARG   ;;
 		c) pkgcfg=$OPTARG   ;;
 		f) filename=$OPTARG ;;
     *) err=1            ;;
 	esac
 done
 
 if [ -z "${pkgname}" ] || [ -z "${pkgver}" ] || [ -z "${filename}" ] ||
     [ -n "${err}" ]; then
 	echo "Usage: $PROG -n <pkgname> -v <pkgver> -c <pkgcfg> -f <filename>"
 	exit 1
 fi
 
 exec cat >"${filename}" <<EOF
 PACKAGE_NAME="${pkgname}"
 PACKAGE_VERSION="${pkgver}"
 PACKAGE_CONFIG="${pkgcfg}"
 NO_WEAK_MODULES="yes"
 PRE_BUILD="configure
   --prefix=/usr
   --with-config=kernel
   --with-linux=\$(
-    case \`lsb_release -is\` in
-      (Debian|Devuan)
-        if [[ -e \${kernel_source_dir/%build/source} ]]
-        then
-          echo \${kernel_source_dir/%build/source}
-        else
-          # A kpkg exception for Proxmox 2.0
-          echo \${kernel_source_dir}
-        fi
-      ;;
-      (*)
-        echo \${kernel_source_dir}
-      ;;
-    esac
+    if [ -e "\${kernel_source_dir/%build/source}" ]
+    then
+      echo "\${kernel_source_dir/%build/source}"
+    else
+      echo "\${kernel_source_dir}"
+    fi
   )
-  --with-linux-obj=\${kernel_source_dir}
+  --with-linux-obj="\${kernel_source_dir}"
   \$(
     [[ -n \"\${ICP_ROOT}\" ]] && \\
     {
       echo --with-qat=\"\${ICP_ROOT}\"
     }
   )
   \$(
     [[ -r \${PACKAGE_CONFIG} ]] \\
     && source \${PACKAGE_CONFIG} \\
     && shopt -q -s extglob \\
     && \\
     {
       if [[ \${ZFS_DKMS_ENABLE_DEBUG,,} == @(y|yes) ]]
       then
         echo --enable-debug
       fi
       if [[ \${ZFS_DKMS_ENABLE_DEBUGINFO,,} == @(y|yes) ]]
       then
         echo --enable-debuginfo
       fi
     }
   )
 "
 POST_BUILD="scripts/dkms.postbuild
   -n \${PACKAGE_NAME}
   -v \${PACKAGE_VERSION}
   -a \${arch}
   -k \${kernelver}
   -t \${dkms_tree}
 "
 AUTOINSTALL="yes"
 REMAKE_INITRD="no"
 MAKE[0]="make"
 STRIP[0]="\$(
   [[ -r \${PACKAGE_CONFIG} ]] \\
   && source \${PACKAGE_CONFIG} \\
   && shopt -q -s extglob \\
   && [[ \${ZFS_DKMS_DISABLE_STRIP,,} == @(y|yes) ]] \\
   && echo -n no
 )"
 STRIP[1]="\${STRIP[0]}"
 STRIP[2]="\${STRIP[0]}"
 STRIP[3]="\${STRIP[0]}"
 STRIP[4]="\${STRIP[0]}"
 STRIP[5]="\${STRIP[0]}"
 STRIP[6]="\${STRIP[0]}"
 STRIP[7]="\${STRIP[0]}"
 STRIP[8]="\${STRIP[0]}"
 BUILT_MODULE_NAME[0]="zavl"
 BUILT_MODULE_LOCATION[0]="module/avl/"
 DEST_MODULE_LOCATION[0]="/extra/avl/avl"
 BUILT_MODULE_NAME[1]="znvpair"
 BUILT_MODULE_LOCATION[1]="module/nvpair/"
 DEST_MODULE_LOCATION[1]="/extra/nvpair/znvpair"
 BUILT_MODULE_NAME[2]="zunicode"
 BUILT_MODULE_LOCATION[2]="module/unicode/"
 DEST_MODULE_LOCATION[2]="/extra/unicode/zunicode"
 BUILT_MODULE_NAME[3]="zcommon"
 BUILT_MODULE_LOCATION[3]="module/zcommon/"
 DEST_MODULE_LOCATION[3]="/extra/zcommon/zcommon"
 BUILT_MODULE_NAME[4]="zfs"
 BUILT_MODULE_LOCATION[4]="module/zfs/"
 DEST_MODULE_LOCATION[4]="/extra/zfs/zfs"
 BUILT_MODULE_NAME[5]="icp"
 BUILT_MODULE_LOCATION[5]="module/icp/"
 DEST_MODULE_LOCATION[5]="/extra/icp/icp"
 BUILT_MODULE_NAME[6]="zlua"
 BUILT_MODULE_LOCATION[6]="module/lua/"
 DEST_MODULE_LOCATION[6]="/extra/lua/zlua"
 BUILT_MODULE_NAME[7]="spl"
 BUILT_MODULE_LOCATION[7]="module/spl/"
 DEST_MODULE_LOCATION[7]="/extra/spl/spl"
 BUILT_MODULE_NAME[8]="zzstd"
 BUILT_MODULE_LOCATION[8]="module/zstd/"
 DEST_MODULE_LOCATION[8]="/extra/zstd/zzstd"
 EOF