diff --git a/src/widgets/dialogs/qwizard_win.cpp b/src/widgets/dialogs/qwizard_win.cpp
index b7788061f1..34708c3e8d 100644
--- a/src/widgets/dialogs/qwizard_win.cpp
+++ b/src/widgets/dialogs/qwizard_win.cpp
@@ -589,7 +589,7 @@ void QVistaHelper::drawBlackRect(const QRect &rect, HDC hdc)
 
 int QVistaHelper::frameSizeDp()
 {
-    return GetSystemMetrics(SM_CYSIZEFRAME);
+    return GetSystemMetrics(SM_CXSIZEFRAME) + GetSystemMetrics(SM_CXPADDEDBORDER);
 }
 
 int QVistaHelper::captionSizeDp()