diff --git a/xorriso-dd-target/xorriso-dd-target b/xorriso-dd-target/xorriso-dd-target
index b9e351d7..85d2b4cd 100755
--- a/xorriso-dd-target/xorriso-dd-target
+++ b/xorriso-dd-target/xorriso-dd-target
@@ -519,8 +519,9 @@ list_devices() {
 
 ## Puts list of mounted (sub-)devices of $1 into $mounted_devs
 list_mounted_of() {
-  partitions=$("$lsblk_cmd" -n -p -o NAME /dev/"$1" | grep -v '^'/dev/"$1"'$' \
-               | sed -e 's/[^a-zA-Z0-9_+@:.,/-]//g' | tr '\n\r' '  ')
+  partitions=$("$lsblk_cmd" -l -n -p -o NAME /dev/"$1" \
+               | grep -v '^'/dev/"$1"'$' \
+               | tr '\n\r' '  ')
   mounted_devs=
   for i in /dev/"$1" $partitions
   do