diff --git a/src/plugins/sfdisk/sfdiskbackend.cpp b/src/plugins/sfdisk/sfdiskbackend.cpp
index 1989fdf..bd99ecf 100644
--- a/src/plugins/sfdisk/sfdiskbackend.cpp
+++ b/src/plugins/sfdisk/sfdiskbackend.cpp
@@ -72,7 +72,7 @@ QList<Device*> SfdiskBackend::scanDevices(bool excludeReadOnly)
                           QStringLiteral("type,name") });
 
     if (cmd.run(-1) && cmd.exitCode() == 0) {
-        const QJsonDocument jsonDocument = QJsonDocument::fromJson(cmd.output().toUtf8());
+        const QJsonDocument jsonDocument = QJsonDocument::fromJson(cmd.output().toLocal8Bit());
         const QJsonObject jsonObject = jsonDocument.object();
         const QJsonArray jsonArray = jsonObject[QLatin1String("blockdevices")].toArray();
         for (const auto &deviceLine : jsonArray) {
@@ -140,7 +140,7 @@ Device* SfdiskBackend::scanDevice(const QString& deviceNode)
         if (jsonCommand.exitCode() != 0)
             return d;
 
-        const QJsonObject jsonObject = QJsonDocument::fromJson(jsonCommand.output().toUtf8()).object();
+        const QJsonObject jsonObject = QJsonDocument::fromJson(jsonCommand.output().toLocal8Bit()).object();
         const QJsonObject partitionTable = jsonObject[QLatin1String("partitiontable")].toObject();
 
         QString tableType = partitionTable[QLatin1String("label")].toString();
@@ -298,7 +298,7 @@ FileSystem::Type SfdiskBackend::detectFileSystem(const QString& partitionPath)
                                  partitionPath });
 
     if (lsblkCommand.run(-1) && lsblkCommand.exitCode() == 0) {
-        const QJsonArray partitionArray = QJsonDocument::fromJson(lsblkCommand.output().toUtf8()).object()[QLatin1String("blockdevices")].toArray();
+        const QJsonArray partitionArray = QJsonDocument::fromJson(lsblkCommand.output().toLocal8Bit()).object()[QLatin1String("blockdevices")].toArray();
 
         for (const auto &partition : partitionArray) {
             QJsonObject partitionObject = partition.toObject();
diff --git a/src/plugins/sfdisk/sfdiskdevice.cpp b/src/plugins/sfdisk/sfdiskdevice.cpp
index 6f80850..c8d816e 100644
--- a/src/plugins/sfdisk/sfdiskdevice.cpp
+++ b/src/plugins/sfdisk/sfdiskdevice.cpp
@@ -71,7 +71,7 @@ bool SfdiskDevice::createPartitionTable(Report& report, const PartitionTable& pt
     if (ptable.type() == PartitionTable::msdos || ptable.type() == PartitionTable::msdos_sectorbased)
         tableType = QByteArrayLiteral("dos");
     else
-        tableType = ptable.typeName().toLatin1();
+        tableType = ptable.typeName().toLocal8Bit();
 
     ExternalCommand createCommand(report, QStringLiteral("sfdisk"), { m_deviceNode } );
     if ( createCommand.start(-1) && createCommand.write(QByteArrayLiteral("label: ") + tableType +
diff --git a/src/plugins/sfdisk/sfdiskpartitiontable.cpp b/src/plugins/sfdisk/sfdiskpartitiontable.cpp
index c6544c0..87caed3 100644
--- a/src/plugins/sfdisk/sfdiskpartitiontable.cpp
+++ b/src/plugins/sfdisk/sfdiskpartitiontable.cpp
@@ -139,7 +139,7 @@ FileSystem::Type SfdiskPartitionTable::detectFileSystemBySector(Report& report,
 
     ExternalCommand jsonCommand(QStringLiteral("sfdisk"), { QStringLiteral("--json"), device.deviceNode() } );
     if (jsonCommand.run(-1) && jsonCommand.exitCode() == 0) {
-        const QJsonArray partitionTable = QJsonDocument::fromJson(jsonCommand.output().toUtf8()).object()[QLatin1String("partitiontable")].toObject()[QLatin1String("partitions")].toArray();
+        const QJsonArray partitionTable = QJsonDocument::fromJson(jsonCommand.output().toLocal8Bit()).object()[QLatin1String("partitiontable")].toObject()[QLatin1String("partitions")].toArray();
         for (const auto &partition : partitionTable) {
             const QJsonObject partitionObject = partition.toObject();
             const qint64 start = partitionObject[QLatin1String("start")].toVariant().toLongLong();