diff --git a/src/libs/utils/fsengine/fsenginehandler.cpp b/src/libs/utils/fsengine/fsenginehandler.cpp
index c5aba915d35..84c9b082f87 100644
--- a/src/libs/utils/fsengine/fsenginehandler.cpp
+++ b/src/libs/utils/fsengine/fsenginehandler.cpp
@@ -47,10 +47,7 @@ QAbstractFileEngine *FSEngineHandler::create(const QString &fileName) const
     static const FilePath rootFilePath =
         FilePath::specialFilePath(FilePath::SpecialPathComponent::RootPath);
 
-    QString fixedFileName = fileName;
-
-    if (fileName.startsWith("//"))
-        fixedFileName = fixedFileName.mid(1);
+    const QString fixedFileName = QDir::cleanPath(fileName);
 
     if (fixedFileName == rootPath) {
         const FilePaths paths
diff --git a/tests/auto/utils/fsengine/tst_fsengine.cpp b/tests/auto/utils/fsengine/tst_fsengine.cpp
index 48969c40176..a32575094bc 100644
--- a/tests/auto/utils/fsengine/tst_fsengine.cpp
+++ b/tests/auto/utils/fsengine/tst_fsengine.cpp
@@ -50,6 +50,7 @@ private slots:
     void testCreateDir();
     void testWindowsPaths();
     void testUrl();
+    void testBrokenWindowsPath();
 
 private:
     QString makeTestPath(QString path, bool asUrl = false);
@@ -290,5 +291,18 @@ void tst_fsengine::testUrl()
     QVERIFY(p.needsDevice());
 }
 
+void tst_fsengine::testBrokenWindowsPath()
+{
+    QTemporaryFile tmp;
+    QVERIFY(tmp.open());
+
+    QString localFileName = tmp.fileName();
+    localFileName.insert(HostOsInfo::isWindowsHost() ? 2 : 0, '/');
+
+    QFile file(localFileName);
+    QVERIFY(file.open(QIODevice::ReadOnly));
+    QCOMPARE(tmp.fileName(), QFileInfo(localFileName).canonicalFilePath());
+}
+
 QTEST_GUILESS_MAIN(tst_fsengine)
 #include "tst_fsengine.moc"