diff --git a/README.md b/README.md
index e340b61..4c4fa52 100644
--- a/README.md
+++ b/README.md
@@ -21,12 +21,12 @@ Use the arkdep-build script to build your customlinux images.
 sudo arkdep-build customlinux
 
 # Or alternatively using a custom image name
-sudo arkdep_OVERWRITE_RANDOM='customlinux_v1.0' arkdep-build customlinux
+sudo ARKDEP_OVERWRITE_RANDOM='customlinux_v1.0' arkdep-build customlinux
 ```
 
 Once done you can find compressed and uncompressed copies of your new image in the `target` directory.
 
-arkdep will by default generate a psuedo-random hex string and use this as the name of your image. This behaviour can be overwritten by assigning a custom name to the `arkdep_OVERWRITE_RANDOM` environment variable.
+arkdep will by default generate a psuedo-random hex string and use this as the name of your image. This behaviour can be overwritten by assigning a custom name to the `ARKDEP_OVERWRITE_RANDOM` environment variable.
 
 ## Repository
 
diff --git a/arkdep-build b/arkdep-build
index 3008057..3fbfa5d 100755
--- a/arkdep-build
+++ b/arkdep-build
@@ -17,8 +17,8 @@ if [[ ! -n $1 || -n $2 ]]; then
 	 are included by default.
 
 	Variables:
-	  arkdep_NO_TAR			Do not create a compressed tarball, only create the images
-	  arkdep_OVERWRITE_RANDOM		Define a custom image name
+	  ARKDEP_NO_TAR			Do not create a compressed tarball, only create the images
+	  ARKDEP_OVERWRITE_RANDOM		Define a custom image name
 	END
 	exit 0
 fi
@@ -62,8 +62,8 @@ cleanup_and_quit () {
 # image names
 gen_random_string () {
 
-	if [[ -v arkdep_OVERWRITE_RANDOM ]]; then
-		random=$arkdep_OVERWRITE_RANDOM
+	if [[ -v ARKDEP_OVERWRITE_RANDOM ]]; then
+		random=$ARKDEP_OVERWRITE_RANDOM
 	else
 		random=$(openssl rand -hex 100 | head -c 42)
 	fi
@@ -185,7 +185,7 @@ if [[ $type == 'archlinux' ]]; then
 	btrfs send -f $output_target/$image_name/$image_name-etc.img $workdir/etc
 	btrfs send -f $output_target/$image_name/$image_name-var.img $workdir/var
 
-	if [[ ! -v arkdep_NO_TAR ]]; then
+	if [[ ! -v ARKDEP_NO_TAR ]]; then
 		printf "\e[1;34m-->\e[0m\e[1m Compressing images\e[0m\n"
 		tar -cv -I 'zstd -12 -T0 ' -f $output_target/$image_name.tar.zst -C $output_target/$image_name .
 	fi