diff --git a/bin/buildiso.in b/bin/buildiso.in
index d21d70f..2ae176b 100755
--- a/bin/buildiso.in
+++ b/bin/buildiso.in
@@ -123,7 +123,7 @@ usage() {
     echo '    -m                 Set SquashFS image mode to persistence'
     echo '    -c                 Disable clean work dir'
     echo '    -f                 Build full ISO (extra=true)'
-    echo '    -d <comp>          Compression used for build ISO: xz, gzip, lzma, lzo, lz4, zstd'
+    echo '    -d <comp>          Compression used for build ISO: gzip, lzma, lz4, lzo, xz, zstd'
     echo "                       [default: ${iso_compression}]"
     echo '    -x                 Build images only'
     echo '    -z                 Generate iso only'
diff --git a/data/manjaro-tools.conf b/data/manjaro-tools.conf
index a5f6bd4..1dab98d 100644
--- a/data/manjaro-tools.conf
+++ b/data/manjaro-tools.conf
@@ -55,7 +55,7 @@
 # the branding; default: auto
 # dist_branding="MJRO"
 
-# compression used, possible values gzip, lzma, lzo, lz4, zstd (default)
+# compression used, possible values gzip, lzma, lz4, lzo, xy, zstd (default)
 # iso_compression=zstd
 
 # unset defaults to given value
diff --git a/lib/util-iso.sh b/lib/util-iso.sh
index 2f54bc1..7f6287f 100644
--- a/lib/util-iso.sh
+++ b/lib/util-iso.sh
@@ -469,12 +469,12 @@ check_requirements(){
     if ! $(is_valid_branch ${target_branch}); then
         die "%s is not a valid branch!" "${target_branch}"
     fi
-
-    local iso_kernel=${kernel:5:1} host_kernel=$(uname -r)
-    if [[ ${iso_kernel} < "4" ]] \
-    || [[ ${host_kernel%%*.} < "4" ]]; then
-        die "The host and iso kernels must be version>=4.0!"
+    if ! $(is_valid_comp ${iso_compression}); then
+        die "%s is not a valid compression algorithm!" "${iso_compression}"
     fi
+
+    local iso_kernel=${kernel:5:1}
+    [[ ${iso_kernel} < "4" ]] && die "ISO kernel must be version>=4.0!"
 }
 
 compress_images(){
diff --git a/lib/util.sh b/lib/util.sh
index 87f0f94..229f35c 100644
--- a/lib/util.sh
+++ b/lib/util.sh
@@ -768,6 +768,13 @@ is_valid_branch(){
     esac
 }
 
+is_valid_comp(){
+    case $1 in
+        'gzip'|'lzma'|'lz4'|'lzo'|'xz'|'zstd') return 0 ;;
+        *) return 1 ;;
+    esac
+}
+
 run(){
     if ${is_build_list}; then
         for item in ${build_list[@]}; do