diff --git a/src/widgets/dialogs/qfiledialog.cpp b/src/widgets/dialogs/qfiledialog.cpp
index f0dc577c0f0..e3e4a583334 100644
--- a/src/widgets/dialogs/qfiledialog.cpp
+++ b/src/widgets/dialogs/qfiledialog.cpp
@@ -39,6 +39,8 @@
 **
 ****************************************************************************/
 
+#define QT_NO_URL_CAST_FROM_STRING
+
 #include <qvariant.h>
 #include <private/qwidgetitemdata_p.h>
 #include "qfiledialog.h"
diff --git a/src/widgets/dialogs/qfiledialog_p.h b/src/widgets/dialogs/qfiledialog_p.h
index 632bbca5a4d..c20dd369535 100644
--- a/src/widgets/dialogs/qfiledialog_p.h
+++ b/src/widgets/dialogs/qfiledialog_p.h
@@ -369,7 +369,7 @@ inline QUrl QFileDialogPrivate::directory_sys() const
 {
     if (QPlatformFileDialogHelper *helper = platformFileDialogHelper())
         return helper->directory();
-    return QString();
+    return QUrl();
 }
 
 inline void QFileDialogPrivate::selectFile_sys(const QUrl &filename)