diff --git a/main/postmarketos-mkinitfs/APKBUILD b/main/postmarketos-mkinitfs/APKBUILD
index 6dfc897a2..2557be1fa 100644
--- a/main/postmarketos-mkinitfs/APKBUILD
+++ b/main/postmarketos-mkinitfs/APKBUILD
@@ -1,5 +1,5 @@
 pkgname=postmarketos-mkinitfs
-pkgver=0.13.0
+pkgver=0.13.1
 pkgrel=0
 pkgdesc="Tool to generate initramfs images for postmarketOS"
 url="https://postmarketos.org"
@@ -40,7 +40,7 @@ check() {
 
 sha512sums="5037cb7285bb7c0c40ca9e6df332d882ef9a8b379756c785f921e062dab1b7e7f3139d00897f69323a916d709ced4297fea8cbd3a13ebae575b873ec9e2cbfae  00-default.modules
 995b4d15e6b248d55d53221ec52674e62d74f0be539ac2ab26d4279544e2bece7aa58810dd831e1b2f08f0520fc9a8dff3ad4df52a46ef73f61e462f74f68c48  init.sh.in
-683b1784cc6572717dd805caabea38fac1780b03ff3540b888aab4fd91ccae404634874e6c9fa39f723186821a849844c6df1235bdcbf47b2de6b7f483c42178  init_functions.sh
+40c48c0b6d499dbe316cbb41dc2c02bdc188444c549f1545135479cd6ead5c318496b5c03a11ff81fdaeddef5f8fa473264a380afc6109a3d54790a489f16c1c  init_functions.sh
 7201d4640a3e9ead8a47ffd9916b068476b7d950760a84c37e02268c942d49896bc986da6bdee27e832639c90775354d68046a6475205d8d1da995b068120d8f  mkinitfs.sh
 d593b921bd6c0204af874266060667d78a232c0131ce7f0ad4124f9b240fcbb6ac2a8a2b8ee30d27d78bed8c1a506c4e6cb13b57c33cee3a00a7d96eca45a7f3  mkinitfs_functions.sh
 c7a3c33daeb12b33ac72207191941c4d634f15c22958273b52af381a70ebaba1d3a9299483f0c447d9e66c560151fe7b9588bb4bbef2c8914f83185984ee4622  mkinitfs_test.sh"
diff --git a/main/postmarketos-mkinitfs/init_functions.sh b/main/postmarketos-mkinitfs/init_functions.sh
index 5fbfe7be5..b3c268d7c 100644
--- a/main/postmarketos-mkinitfs/init_functions.sh
+++ b/main/postmarketos-mkinitfs/init_functions.sh
@@ -211,6 +211,13 @@ wait_root_partition() {
 	done
 }
 
+# $1: path to device
+has_unallocated_space() {
+	# Check if there is unallocated space at the end of the device
+	parted -s "$1" print free | tail -n2 | \
+		head -n1 | grep -qi "free space"
+}
+
 resize_root_partition() {
 	partition=$(find_root_partition)
 
@@ -228,9 +235,7 @@ resize_root_partition() {
 		# Get physical device
 		partition_dev=$(dmsetup deps -o devname "$partition" | \
 			awk -F "[()]" '{print "/dev/"$2}')
-		# Check if there is unallocated space at the end of the device
-		if parted -s "$partition_dev" print free | tail -n2 | \
-			head -n1 | grep -qi "free space"; then
+		if has_unallocated_space "$partition_dev"; then
 			echo "Resize root partition ($partition)"
 			# unmount subpartition, resize and remount it
 			kpartx -d "$partition"
@@ -242,9 +247,12 @@ resize_root_partition() {
 	# except for QEMU devices (where PMOS_FORCE_PARTITION_RESIZE gets passed as
 	# kernel parameter).
 	if grep -q PMOS_FORCE_PARTITION_RESIZE /proc/cmdline; then
-		echo "Resize root partition ($partition)"
-		parted -s "$(echo "$partition" | sed -E 's/p?2$//')" resizepart 2 100%
-		partprobe
+		partition_dev="$(echo "$partition" | sed -E 's/2$//')"
+		if has_unallocated_space "$partition_dev"; then
+			echo "Resize root partition ($partition)"
+			parted -s "$partition_dev" resizepart 2 100%
+			partprobe
+		fi
 	fi
 }