diff --git a/main/postmarketos-mkinitfs/APKBUILD b/main/postmarketos-mkinitfs/APKBUILD
index 40dfab977..d6698b4e7 100644
--- a/main/postmarketos-mkinitfs/APKBUILD
+++ b/main/postmarketos-mkinitfs/APKBUILD
@@ -1,5 +1,5 @@
 pkgname=postmarketos-mkinitfs
-pkgver=0.7.17
+pkgver=0.7.18
 pkgrel=0
 pkgdesc="Tool to generate initramfs images for postmarketOS"
 url="https://postmarketos.org"
@@ -25,5 +25,5 @@ package() {
 }
 
 sha512sums="8be7f29394f8cd4e1c4b93f018f6314350f7e37e20d242c97284c1b112a106f882318a101bc0c70b391590b969023901580c677ee9f869850e90e69171a44e80  init.sh.in
-39154fa1f4874d1bbe3b6fef20e15f6d353fd720a3b7a4fd2332bae7bff460a1546c7a220deaef1e10ed988731bceaefd2aaaee731961810728b511cd8fb8823  init_functions.sh
+0a74a5be08ecc0e07ea4f4e361865327bf1e56006da0aa1bc2c5716ea2951dcdc9c9fcb9f5a6205aeedfff08e027b2bb44913c891378144d0fe264b53257f359  init_functions.sh
 c9151771ffed846e88618e59e19f5bf6a9aa7d923de1194f3a9cd9d18fa3ed0d1e45622ecb81ef2d23295a25114dacf5cbdde5a23f8b4a376bf1f73cd8f3f0b3  mkinitfs.sh"
diff --git a/main/postmarketos-mkinitfs/init_functions.sh b/main/postmarketos-mkinitfs/init_functions.sh
index 061d1d362..8799410e2 100644
--- a/main/postmarketos-mkinitfs/init_functions.sh
+++ b/main/postmarketos-mkinitfs/init_functions.sh
@@ -162,7 +162,7 @@ resize_root_partition() {
 	partition=$(find_root_partition)
 	# Only resize the partition if it's inside the device-mapper, which means
 	# that the partition is stored as a subpartition inside another one.
-	# In this case we want to resize it to use all the unused space of the 
+	# In this case we want to resize it to use all the unused space of the
 	# external partition.
 	if [ -z "${partition##"/dev/mapper/"*}" ]; then
 		# Get physical device
@@ -254,6 +254,7 @@ setup_usb_network_configfs() {
 	# Create english (0x409) strings
 	mkdir $CONFIGFS/g1/strings/0x409 || echo "  Couldn't create $CONFIGFS/g1/strings/0x409"
 	echo "postmarketOS" > "$CONFIGFS/g1/strings/0x409/manufacturer"
+	echo "postmarketOS" > "$CONFIGFS/g1/strings/0x409/serialnumber"
 	echo "Debug network interface" > "$CONFIGFS/g1/strings/0x409/product"
 
 	# Create rndis function