diff --git a/sysuser-tools.changes b/sysuser-tools.changes
index e576b9a..5df4ccc 100644
--- a/sysuser-tools.changes
+++ b/sysuser-tools.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Mon Aug  5 14:25:14 UTC 2024 - Thorsten Kukuk <kukuk@suse.com>
+
+- Implement UID:GID support for busybox
+- Reenable UID:GID support
+
 -------------------------------------------------------------------
 Sat Aug  3 06:09:03 UTC 2024 - Thorsten Kukuk <kukuk@suse.com>
 
diff --git a/sysusers2shadow.sh b/sysusers2shadow.sh
index ee7a5fd..0a1a69f 100644
--- a/sysusers2shadow.sh
+++ b/sysusers2shadow.sh
@@ -52,12 +52,11 @@ else
 			    continue
 			fi
 
-			# Split user and Group id
-			#userGrouArr=(${2//:/ })
-			#USER_ID=${userGrouArr[0]}
-			#GROUP_ID=${userGrouArr[1]}
-			USER_ID=$2
-			GROUP_ID=""
+			# Split user and Group id. Must work with busybox sh.
+			case $2 in
+				(*:*) USER_ID=${2%:*} GROUP_ID=${2##*:};;
+				(*)   USER_ID=$2      GROUP_ID="";;
+			esac
 
 			if [ -n "$USER_ID" ] && [ "$USER_ID" != "-" ]; then
 				ARGUMENTS="-u $USER_ID $ARGUMENTS"
@@ -89,9 +88,13 @@ else
 
 			    run /usr/sbin/useradd -r -c "$3" -d "${homedir}" $ARGUMENTS
 			elif [ -x "$busybox" ]; then
+			    if [ -n "$GROUP_ID" ] && [ "$GROUP_ID" != "-" ]; then
+				run $busybox adduser -S -H -g "$3" -G "GROUP_ID" -h "${homedir}" $ARGUMENTS
+			    else
 				/usr/bin/getent group "$1" >> /dev/null || $busybox addgroup -S "$1"
 
 				run $busybox adduser -S -H -g "$3" -G "$1" -h "${homedir}" $ARGUMENTS
+			    fi
 			else
 				echo "ERROR: neither useradd nor busybox found!"
 				exit 1
@@ -100,9 +103,9 @@ else
 		m)
 			shift
 			if [ -x /usr/sbin/usermod ] ; then
-				run /usr/sbin/usermod -a -G "$2" "$1"
+				run /usr/sbin/usermod -a -G "$USER_ID" "$1"
 			elif [ -x "$busybox" ]; then
-				run $busybox addgroup "$1" "$2"
+				run $busybox addgroup "$1" "$USER_ID"
 			else
 				echo "ERROR: neither usermod nor busybox found!"
 				exit 1