diff --git a/xorriso-dd-target/xorriso-dd-target b/xorriso-dd-target/xorriso-dd-target
index 8ce2ebb5..f4d633e9 100755
--- a/xorriso-dd-target/xorriso-dd-target
+++ b/xorriso-dd-target/xorriso-dd-target
@@ -410,7 +410,7 @@ list_devices() {
     fi
 
     # Wanted or unwanted filesystem types
-    fstypes=$("$sudo_cmd" "$lsblk_cmd" -n -o FSTYPE /dev/"$name")
+    fstypes=$($sudo_cmd "$lsblk_cmd" -n -o FSTYPE /dev/"$name")
     if test "$?" -gt 0
     then
       fstypes="lsblk_fstype_error"
@@ -561,7 +561,7 @@ write_image() {
       then
         echo "  $sudo_cmd $umount_cmd $i"
       else
-        if "$sudo_cmd" "$umount_cmd" "$i"
+        if $sudo_cmd "$umount_cmd" "$i"
         then
           echo "Unmounted: $i"
         else
@@ -594,7 +594,7 @@ write_image() {
   else
     echo "Performing:"
     echo "  $sudo_cmd $dd_cmd if='${1}' bs=1M of=/dev/'${2}' ; sync"
-    "$sudo_cmd" "$dd_cmd" if="${1}" bs=1M of=/dev/"${2}" ; sync
+    $sudo_cmd "$dd_cmd" if="${1}" bs=1M of=/dev/"${2}" ; sync
   fi
 
   # >>> ??? Erase possible GPT backup table at end of device ?