diff --git a/src/plugins/platforms/cocoa/qcocoahelpers.h b/src/plugins/platforms/cocoa/qcocoahelpers.h
index 050a2e69d1..45c35cccbf 100644
--- a/src/plugins/platforms/cocoa/qcocoahelpers.h
+++ b/src/plugins/platforms/cocoa/qcocoahelpers.h
@@ -73,9 +73,12 @@ NSImage *qt_mac_cgimage_to_nsimage(CGImageRef iamge);
 NSImage *qt_mac_create_nsimage(const QPixmap &pm);
 
 NSSize qt_mac_toNSSize(const QSize &qtSize);
+NSRect qt_mac_toNSRect(const QRect &rect);
+QRect qt_mac_toQRect(const NSRect &rect);
 
 QColor qt_mac_toQColor(const NSColor *color);
 
+
 // Creates a mutable shape, it's the caller's responsibility to release.
 HIMutableShapeRef qt_mac_QRegionToHIMutableShape(const QRegion &region);
 
diff --git a/src/plugins/platforms/cocoa/qcocoahelpers.mm b/src/plugins/platforms/cocoa/qcocoahelpers.mm
index 8841a65844..743c78ed05 100644
--- a/src/plugins/platforms/cocoa/qcocoahelpers.mm
+++ b/src/plugins/platforms/cocoa/qcocoahelpers.mm
@@ -159,6 +159,16 @@ NSSize qt_mac_toNSSize(const QSize &qtSize)
     return NSMakeSize(qtSize.width(), qtSize.height());
 }
 
+NSRect qt_mac_toNSRect(const QRect &rect)
+{
+    return NSMakeRect(rect.x(), rect.y(), rect.width(), rect.height());
+}
+
+QRect qt_mac_toQRect(const NSRect &rect)
+{
+    return QRect(rect.origin.x, rect.origin.y, rect.size.width, rect.size.height);
+}
+
 QColor qt_mac_toQColor(const NSColor *color)
 {
     QColor qtColor;
diff --git a/src/plugins/platforms/cocoa/qnsview.mm b/src/plugins/platforms/cocoa/qnsview.mm
index f23fd3045f..a953b25d84 100644
--- a/src/plugins/platforms/cocoa/qnsview.mm
+++ b/src/plugins/platforms/cocoa/qnsview.mm
@@ -129,22 +129,29 @@ static QTouchDevice *touchDevice = 0;
 
 - (void)updateGeometry
 {
-    NSRect rect = [self frame];
-    NSRect windowRect = [[self window] frame];
-    QRect geo(windowRect.origin.x, qt_mac_flipYCoordinate(windowRect.origin.y + rect.size.height), rect.size.width, rect.size.height);
+    QRect geometry;
+    if (m_platformWindow->m_nsWindow) {
+        // top level window, get window rect and flip y.
+        NSRect rect = [self frame];
+        NSRect windowRect = [[self window] frame];
+        geometry = QRect(windowRect.origin.x, qt_mac_flipYCoordinate(windowRect.origin.y + rect.size.height), rect.size.width, rect.size.height);
+    } else {
+        // child window, use the frame rect
+        geometry = qt_mac_toQRect([self frame]);
+    }
 
 #ifdef QT_COCOA_ENABLE_WINDOW_DEBUG
-    qDebug() << "QNSView::udpateGeometry" << geo;
+    qDebug() << "QNSView::udpateGeometry" << m_platformWindow << geometry;
 #endif
 
     // Call setGeometry on QPlatformWindow. (not on QCocoaWindow,
     // doing that will initiate a geometry change it and possibly create
     // an infinite loop when this notification is triggered again.)
-    m_platformWindow->QPlatformWindow::setGeometry(geo);
+    m_platformWindow->QPlatformWindow::setGeometry(geometry);
 
     // Send a geometry change event to Qt, if it's ready to handle events
     if (!m_platformWindow->m_inConstructor) {
-        QWindowSystemInterface::handleGeometryChange(m_window, geo);
+        QWindowSystemInterface::handleGeometryChange(m_window, geometry);
         QWindowSystemInterface::flushWindowSystemEvents();
     }
 }