diff --git a/.update/patches b/.update/patches
index 925b41c759..002e2d995f 100755
--- a/.update/patches
+++ b/.update/patches
@@ -1793,7 +1793,9 @@ Patch_9_7()
 	# NanoPi R5S/R6S migration from legacy image with 8 partitions to Armbian-based kernel and bootloader
 	elif [[ $G_HW_MODEL == 76 ]] && dpkg-query -s 'firmware-nanopi5' &> /dev/null
 	then
-		case $(</proc/device-tree/model) in
+		local rmodel
+		read -r rmodel < /proc/device-tree/model
+		case $rmodel in
 			*R5S*) HW_VARIANT=1 /boot/dietpi/func/dietpi-set_software apt-mirror dietpi; local model='nanopi-r5s';;
 			*R5C*) HW_VARIANT=2 /boot/dietpi/func/dietpi-set_software apt-mirror dietpi; local model='nanopi-r5c';;
 			*) G_DIETPI-NOTIFY 1 'No known SBC model detected'; exit 1;;
@@ -1852,7 +1854,7 @@ Patch_9_7()
 			G_EXEC_OUTPUT=1 G_EXEC sfdisk --no-reread -N1 "$rootdrive" <<< ',+' # Needed, since above command and '286720,+' somehow create the partition 2015 sectors smaller, resulting in too large filesystem size. Only a subsequent ',+' expands it to the true end of the drive.
 			# LAN interface migration
 			G_DIETPI-NOTIFY 2 'Migrating LAN interface configs'
-			case $(</proc/device-tree/model) in
+			case $rmodel in
 				*R5S*) local eth0='ethto2' eth1='ethto0' eth2='ethto1';;
 				*R5C*) local eth0='ethto1' eth1='ethto0' eth2='';;
 				*) :;;
@@ -1868,7 +1870,9 @@ Patch_9_7()
 
 	elif [[ $G_HW_MODEL == 79 ]] && dpkg-query -s 'firmware-nanopi6' &> /dev/null
 	then
-		case $(</proc/device-tree/model) in
+		local rmodel
+		read -r rmodel < /proc/device-tree/model
+		case $rmodel in
 			*R6S*) HW_VARIANT=1 /boot/dietpi/func/dietpi-set_software apt-mirror dietpi; local model='nanopi-r6s';;
 			*R6C*) HW_VARIANT=2 /boot/dietpi/func/dietpi-set_software apt-mirror dietpi; local model='nanopi-r6c';;
 			*T6*) HW_VARIANT=3 /boot/dietpi/func/dietpi-set_software apt-mirror dietpi; local model='nanopct6';;
@@ -1934,7 +1938,7 @@ Patch_9_7()
 			G_EXEC_OUTPUT=1 G_EXEC sfdisk --no-reread -N1 "$rootdrive" <<< ',+' # Needed, since above command and '286720,+' somehow create the partition 2015 sectors smaller, resulting in too large filesystem size. Only a subsequent ',+' expands it to the true end of the drive.
 			# LAN interface migration
 			G_DIETPI-NOTIFY 2 'Migrating LAN interface configs'
-			case $(</proc/device-tree/model) in
+			case $rmodel in
 				*R6S*) local eth1='ethto2' eth2='ethto1';;
 				*) local eth0='skip';;
 			esac