diff --git a/src/widgets/dialogs/qfileinfogatherer_p.h b/src/widgets/dialogs/qfileinfogatherer_p.h
index 3e5d1be384..c07c908a55 100644
--- a/src/widgets/dialogs/qfileinfogatherer_p.h
+++ b/src/widgets/dialogs/qfileinfogatherer_p.h
@@ -58,13 +58,14 @@
 #include <qwaitcondition.h>
 #include <qfilesystemwatcher.h>
 #include <qfileiconprovider.h>
-#include <qfsfileengine.h>
 #include <qpair.h>
 #include <qstack.h>
 #include <qdatetime.h>
 #include <qdir.h>
 #include <qelapsedtimer.h>
 
+#include <private/qfilesystemengine_p.h>
+
 QT_BEGIN_NAMESPACE
 
 class QExtendedInformation {
@@ -86,8 +87,7 @@ public:
 
 #ifndef QT_NO_FSFILEENGINE
     bool isCaseSensitive() const {
-        QFSFileEngine fe(mFileInfo.absoluteFilePath());
-        return fe.caseSensitive();
+        return QFileSystemEngine::isCaseSensitive();
     }
 #endif