diff --git a/cbox-tree.d/usr/lib/cryptobox/cbox-manage.sh b/cbox-tree.d/usr/lib/cryptobox/cbox-manage.sh
index f53f88e..31a78ba 100755
--- a/cbox-tree.d/usr/lib/cryptobox/cbox-manage.sh
+++ b/cbox-tree.d/usr/lib/cryptobox/cbox-manage.sh
@@ -226,9 +226,10 @@ function find_harddisk()
 			    done
 		fi )
 	if [ -z "$dev" ] ; then
-		echo "no valid harddisk for initialisation found!" >>"$LOG_FILE"
+		log_msg "no valid harddisk for initialisation found!"
 		cat /proc/partitions >>"$LOG_FILE"
-		return 1
+		# do not return with an error, to avoid a failing of the script ('break on error')
+		# the caller of this function should handle an empty return string
 	fi
 	echo -n "$dev"
 }
diff --git a/scripts/cbox-dev.sh b/scripts/cbox-dev.sh
index 6547fd4..3ebbdf7 100755
--- a/scripts/cbox-dev.sh
+++ b/scripts/cbox-dev.sh
@@ -116,7 +116,7 @@ function box_diff()
 [ $# -eq 0 ] && echo "[`basename $0`] - no arguments supplied - maybe you want to use '--help'" && exit 1
 
 ACTION=--help
-[ $# -gt 1 ] && $ACTION=$1
+[ $# -gt 1 ] && ACTION=$1
 
 case "$1" in
 	diff )
@@ -160,7 +160,7 @@ case "$1" in
 		echo -e "unknown action: $1"
 		echo
 		$0 help
-		exit "1"
+		exit 1
 		;;
   esac