diff --git a/src/libs/qmljs/qmljsmodelmanagerinterface.cpp b/src/libs/qmljs/qmljsmodelmanagerinterface.cpp
index a7047d8d612..2d879ecb0af 100644
--- a/src/libs/qmljs/qmljsmodelmanagerinterface.cpp
+++ b/src/libs/qmljs/qmljsmodelmanagerinterface.cpp
@@ -1213,7 +1213,7 @@ static QList<Utils::FilePath> minimalPrefixPaths(const QList<Utils::FilePath> &p
     // find minimal prefix, ensure '/' at end
     for (Utils::FilePath path : qAsConst(paths)) {
         if (!path.endsWith("/"))
-            path.setPath(path.path() + "/");
+            path.setPath(QString(path.path() + "/"));
         if (path.path().length() > 1)
             sortedPaths.append(path);
     }
diff --git a/src/libs/utils/buildablehelperlibrary.cpp b/src/libs/utils/buildablehelperlibrary.cpp
index a23ba678dcb..b011959f8fc 100644
--- a/src/libs/utils/buildablehelperlibrary.cpp
+++ b/src/libs/utils/buildablehelperlibrary.cpp
@@ -60,7 +60,7 @@ FilePath BuildableHelperLibrary::qtChooserToQmakePath(const FilePath &qtChooser)
         return {};
 
     FilePath qmake = qtChooser;
-    qmake.setPath(output.mid(pos, end - pos) + "/qmake");
+    qmake.setPath(QString(output.mid(pos, end - pos) + "/qmake"));
     return qmake;
 }
 
diff --git a/src/libs/utils/filepath.cpp b/src/libs/utils/filepath.cpp
index 978d9e601e9..4fd32932b46 100644
--- a/src/libs/utils/filepath.cpp
+++ b/src/libs/utils/filepath.cpp
@@ -340,17 +340,46 @@ QString FilePath::completeSuffix() const
     return {};
 }
 
-void FilePath::setScheme(const QString &scheme)
+void FilePath::setScheme(const QStringView scheme)
 {
     QTC_CHECK(!scheme.contains('/'));
-    m_scheme = scheme;
+    m_scheme = scheme.toString();
 }
 
-void FilePath::setHost(const QString &host)
+void FilePath::setHost(const QStringView host)
 {
-    m_host = host;
+    m_host = host.toString();
 }
 
+void FilePath::setPath(const QStringView path)
+{
+    setRootAndPath(path, HostOsInfo::hostOs());
+}
+
+QStringView FilePath::scheme() const
+{
+    return m_scheme;
+}
+
+QStringView FilePath::host() const
+{
+    return m_host;
+}
+
+QString FilePath::path() const
+{
+    return m_root + m_path;
+}
+
+QStringView FilePath::root() const
+{
+    return m_root;
+}
+
+void FilePath::setRoot(const QStringView root)
+{
+    m_root = root.toString();
+}
 
 /// \returns a bool indicating whether a file with this
 /// FilePath exists.
diff --git a/src/libs/utils/filepath.h b/src/libs/utils/filepath.h
index c2ac18746ae..fabafc13d6a 100644
--- a/src/libs/utils/filepath.h
+++ b/src/libs/utils/filepath.h
@@ -89,17 +89,17 @@ public:
     QVariant toVariant() const;
     QUrl toUrl() const;
 
-    QString scheme() const { return m_scheme; }
-    void setScheme(const QString &scheme);
+    QStringView scheme() const;
+    void setScheme(const QStringView scheme);
 
-    QString host() const { return m_host; }
-    void setHost(const QString &host);
+    QStringView host() const;
+    void setHost(const QStringView host);
 
-    QString path() const { return m_root + m_path; }
-    void setPath(const QString &path) { setRootAndPath(path, HostOsInfo::hostOs()); }
+    QString path() const;
+    void setPath(const QStringView path);
 
-    QString root() const { return m_root; }
-    void setRoot(const QString &root) { m_root = root; }
+    QStringView root() const;
+    void setRoot(const QStringView root);
 
     QString fileName() const;
     QString fileNameWithPathComponents(int pathComponents) const;
diff --git a/src/libs/utils/fileutils.cpp b/src/libs/utils/fileutils.cpp
index c0edc99c205..eb81c9b5ac9 100644
--- a/src/libs/utils/fileutils.cpp
+++ b/src/libs/utils/fileutils.cpp
@@ -408,7 +408,7 @@ FilePath FileUtils::commonPath(const FilePaths &paths)
     FilePath result;
 
     // Common scheme
-    const QString &commonScheme = first.scheme();
+    const QStringView commonScheme = first.scheme();
     auto sameScheme = [&commonScheme] (const FilePath &fp) {
         return commonScheme == fp.scheme();
     };
@@ -417,7 +417,7 @@ FilePath FileUtils::commonPath(const FilePaths &paths)
     result.setScheme(commonScheme);
 
     // Common host
-    const QString &commonHost = first.host();
+    const QStringView commonHost = first.host();
     auto sameHost = [&commonHost] (const FilePath &fp) {
         return commonHost == fp.host();
     };
diff --git a/src/libs/utils/fsengine/fsengine.cpp b/src/libs/utils/fsengine/fsengine.cpp
index cbfc2821793..8b542e72709 100644
--- a/src/libs/utils/fsengine/fsengine.cpp
+++ b/src/libs/utils/fsengine/fsengine.cpp
@@ -78,14 +78,14 @@ QStringList &FSEngine::deviceSchemes()
     return g_deviceSchemes;
 }
 
-void FSEngine::registerDeviceScheme(const QString &scheme)
+void FSEngine::registerDeviceScheme(const QStringView scheme)
 {
-    deviceSchemes().append(scheme);
+    deviceSchemes().append(scheme.toString());
 }
 
-void FSEngine::unregisterDeviceScheme(const QString &scheme)
+void FSEngine::unregisterDeviceScheme(const QStringView scheme)
 {
-    deviceSchemes().removeAll(scheme);
+    deviceSchemes().removeAll(scheme.toString());
 }
 
 QStringList FSEngine::registeredDeviceSchemes()
diff --git a/src/libs/utils/fsengine/fsengine.h b/src/libs/utils/fsengine/fsengine.h
index 4c6326038e3..56645d4b905 100644
--- a/src/libs/utils/fsengine/fsengine.h
+++ b/src/libs/utils/fsengine/fsengine.h
@@ -51,8 +51,8 @@ public:
     static void addDevice(const Utils::FilePath &deviceRoot);
     static void removeDevice(const Utils::FilePath &deviceRoot);
 
-    static void registerDeviceScheme(const QString &scheme);
-    static void unregisterDeviceScheme(const QString &scheme);
+    static void registerDeviceScheme(const QStringView scheme);
+    static void unregisterDeviceScheme(const QStringView scheme);
     static QStringList registeredDeviceSchemes();
 
 private:
diff --git a/src/libs/utils/macroexpander.cpp b/src/libs/utils/macroexpander.cpp
index d2340a71b08..44b55bea2c8 100644
--- a/src/libs/utils/macroexpander.cpp
+++ b/src/libs/utils/macroexpander.cpp
@@ -295,8 +295,8 @@ FilePath MacroExpander::expand(const FilePath &fileNameWithVariables) const
 {
     FilePath result = fileNameWithVariables;
     result.setPath(expand(result.path()));
-    result.setHost(expand(result.host()));
-    result.setScheme(expand(result.scheme()));
+    result.setHost(expand(result.host().toString()));
+    result.setScheme(expand(result.scheme().toString()));
     return result;
 }
 
diff --git a/src/plugins/docker/dockerconstants.h b/src/plugins/docker/dockerconstants.h
index b1ed087b228..fa66489536e 100644
--- a/src/plugins/docker/dockerconstants.h
+++ b/src/plugins/docker/dockerconstants.h
@@ -28,7 +28,7 @@
 namespace Docker::Constants {
 
 const char DOCKER[] = "docker";
-const char DOCKER_DEVICE_SCHEME[] = "docker";
+const char16_t DOCKER_DEVICE_SCHEME[] = u"docker";
 
 const char DOCKER_SETTINGS_ID[] = "Docker.Settings";
 const char DOCKER_DEVICE_TYPE[] = "DockerDeviceType";
diff --git a/src/plugins/docker/dockerdevice.cpp b/src/plugins/docker/dockerdevice.cpp
index 08eaf00c490..7bddde22b06 100644
--- a/src/plugins/docker/dockerdevice.cpp
+++ b/src/plugins/docker/dockerdevice.cpp
@@ -614,7 +614,7 @@ FilePath DockerDevice::mapToGlobalPath(const FilePath &pathOnDevice) const
 
     FilePath result;
     result.setPath(pathOnDevice.path());
-    result.setScheme("docker");
+    result.setScheme(Constants::DOCKER_DEVICE_SCHEME);
     result.setHost(d->m_data.repoAndTag());
 
 // The following would work, but gives no hint on repo and tag
@@ -646,18 +646,23 @@ Utils::FilePath DockerDevice::rootPath() const
     FilePath root;
     root.setScheme(Constants::DOCKER_DEVICE_SCHEME);
     root.setHost(d->m_data.repoAndTag());
-    root.setPath("/");
+    root.setPath(u"/");
     return root;
 }
 
 bool DockerDevice::handlesFile(const FilePath &filePath) const
 {
-    if (filePath.scheme() == "device" && filePath.host() == id().toString())
+    if (filePath.scheme() == u"device" && filePath.host() == id().toString())
         return true;
-    if (filePath.scheme() == "docker" && filePath.host() == d->m_data.imageId)
+
+    if (filePath.scheme() == Constants::DOCKER_DEVICE_SCHEME
+            && filePath.host() == d->m_data.imageId)
         return true;
-    if (filePath.scheme() == "docker" && filePath.host() == d->m_data.repo + ':' + d->m_data.tag)
+
+    if (filePath.scheme() == Constants::DOCKER_DEVICE_SCHEME
+            && filePath.host() == QString(d->m_data.repo + ':' + d->m_data.tag))
         return true;
+
     return false;
 }
 
diff --git a/src/plugins/projectexplorer/devicesupport/devicemanager.cpp b/src/plugins/projectexplorer/devicesupport/devicemanager.cpp
index 16aeae39108..b1edea6e9c7 100644
--- a/src/plugins/projectexplorer/devicesupport/devicemanager.cpp
+++ b/src/plugins/projectexplorer/devicesupport/devicemanager.cpp
@@ -377,7 +377,7 @@ IDevice::ConstPtr DeviceManager::deviceForPath(const FilePath &path)
 {
     const QList<IDevice::Ptr> devices = instance()->d->deviceList();
 
-    if (path.scheme() == "device") {
+    if (path.scheme() == u"device") {
         for (const IDevice::Ptr &dev : devices) {
             if (path.host() == dev->id().toString())
                 return dev;
diff --git a/src/plugins/projectexplorer/devicesupport/idevice.cpp b/src/plugins/projectexplorer/devicesupport/idevice.cpp
index f7ca5633bb7..6a679c22749 100644
--- a/src/plugins/projectexplorer/devicesupport/idevice.cpp
+++ b/src/plugins/projectexplorer/devicesupport/idevice.cpp
@@ -220,7 +220,7 @@ FilePath IDevice::mapToGlobalPath(const FilePath &pathOnDevice) const
     // match DeviceManager::deviceForPath
     FilePath result;
     result.setPath(pathOnDevice.path());
-    result.setScheme("device");
+    result.setScheme(u"device");
     result.setHost(id().toString());
     return result;
 }
@@ -237,7 +237,7 @@ FilePath IDevice::filePath(const QString &pathOnDevice) const
 
 bool IDevice::handlesFile(const FilePath &filePath) const
 {
-    if (filePath.scheme() == "device" && filePath.host() == id().toString())
+    if (filePath.scheme() == u"device" && filePath.host() == id().toString())
         return true;
     return false;
 }
@@ -781,9 +781,9 @@ void IDevice::setMachineType(MachineType machineType)
 FilePath IDevice::rootPath() const
 {
     FilePath root;
-    root.setScheme("device");
+    root.setScheme(u"device");
     root.setHost(id().toString());
-    root.setPath("/");
+    root.setPath(u"/");
     return root;
 }
 
diff --git a/src/plugins/remotelinux/linuxdevice.cpp b/src/plugins/remotelinux/linuxdevice.cpp
index b085edd68f4..3ccb05c6cc1 100644
--- a/src/plugins/remotelinux/linuxdevice.cpp
+++ b/src/plugins/remotelinux/linuxdevice.cpp
@@ -1048,20 +1048,20 @@ QString LinuxDevice::userAtHost() const
     return sshParameters().userAtHost();
 }
 
-Utils::FilePath LinuxDevice::rootPath() const
+FilePath LinuxDevice::rootPath() const
 {
-    Utils::FilePath root;
-    root.setScheme("ssh");
+    FilePath root;
+    root.setScheme(u"ssh");
     root.setHost(userAtHost());
-    root.setPath("/");
+    root.setPath(u"/");
     return root;
 }
 
 bool LinuxDevice::handlesFile(const FilePath &filePath) const
 {
-    if (filePath.scheme() == "device" && filePath.host() == id().toString())
+    if (filePath.scheme() == u"device" && filePath.host() == id().toString())
         return true;
-    if (filePath.scheme() == "ssh" && filePath.host() == userAtHost())
+    if (filePath.scheme() == u"ssh" && filePath.host() == userAtHost())
         return true;
     return false;
 }
diff --git a/src/plugins/remotelinux/remotelinuxplugin.cpp b/src/plugins/remotelinux/remotelinuxplugin.cpp
index ef93ad8f3fe..e1eb815e9d1 100644
--- a/src/plugins/remotelinux/remotelinuxplugin.cpp
+++ b/src/plugins/remotelinux/remotelinuxplugin.cpp
@@ -117,12 +117,12 @@ static RemoteLinuxPluginPrivate *dd = nullptr;
 RemoteLinuxPlugin::RemoteLinuxPlugin()
 {
     setObjectName(QLatin1String("RemoteLinuxPlugin"));
-    FSEngine::registerDeviceScheme("ssh");
+    FSEngine::registerDeviceScheme(u"ssh");
 }
 
 RemoteLinuxPlugin::~RemoteLinuxPlugin()
 {
-    FSEngine::unregisterDeviceScheme("ssh");
+    FSEngine::unregisterDeviceScheme(u"ssh");
     delete dd;
 }
 
diff --git a/tests/auto/utils/fsengine/tst_fsengine.cpp b/tests/auto/utils/fsengine/tst_fsengine.cpp
index 5fb9b215f2d..48969c40176 100644
--- a/tests/auto/utils/fsengine/tst_fsengine.cpp
+++ b/tests/auto/utils/fsengine/tst_fsengine.cpp
@@ -188,9 +188,9 @@ void tst_fsengine::initTestCase()
 void tst_fsengine::testFilePathFromToString()
 {
     FilePath p = FilePath::fromString("device://test/test.txt");
-    QCOMPARE(p.scheme(), "device");
-    QCOMPARE(p.host(), "test");
-    QCOMPARE(p.path(), "/test.txt");
+    QCOMPARE(p.scheme(), u"device");
+    QCOMPARE(p.host(), u"test");
+    QCOMPARE(p.path(), u"/test.txt");
 
     QString asString = p.toString();
     QCOMPARE(asString,
@@ -198,9 +198,9 @@ void tst_fsengine::testFilePathFromToString()
                  + "/test/test.txt");
 
     FilePath p2 = FilePath::fromString(asString);
-    QCOMPARE(p.scheme(), "device");
-    QCOMPARE(p.host(), "test");
-    QCOMPARE(p.path(), "/test.txt");
+    QCOMPARE(p.scheme(), u"device");
+    QCOMPARE(p.host(), u"test");
+    QCOMPARE(p.path(), u"/test.txt");
 }
 
 void tst_fsengine::testRootPathContainsFakeDir()