diff --git a/src/gui/kernel/qguiapplication.cpp b/src/gui/kernel/qguiapplication.cpp
index 422c6ee8f69..8f806175c23 100644
--- a/src/gui/kernel/qguiapplication.cpp
+++ b/src/gui/kernel/qguiapplication.cpp
@@ -3176,6 +3176,10 @@ void QGuiApplicationPrivate::processScreenLogicalDotsPerInchChange(QWindowSystem
         s->d_func()->updateGeometry();
     }
 
+    for (QWindow *window : QGuiApplication::allWindows())
+        if (window->screen() == e->screen)
+            QWindowPrivate::get(window)->updateDevicePixelRatio();
+
     resetCachedDevicePixelRatio();
 }