diff --git a/src/plugins/platforms/ios/qiosglobal.h b/src/plugins/platforms/ios/qiosglobal.h
index dbedba7e85a2c4dc8ae1f72404e6ddb388d6ee40..f7b9cd7015712df89a9c39a81245249c274f16e1 100644
--- a/src/plugins/platforms/ios/qiosglobal.h
+++ b/src/plugins/platforms/ios/qiosglobal.h
@@ -62,7 +62,7 @@ QPointF fromCGPoint(const CGPoint &point);
 
 Qt::ScreenOrientation toQtScreenOrientation(UIDeviceOrientation uiDeviceOrientation);
 UIDeviceOrientation fromQtScreenOrientation(Qt::ScreenOrientation qtOrientation);
-QRect fromPortraitToPrimary(const QRect &rect, QPlatformScreen *screen);
+
 int infoPlistValue(NSString* key, int defaultValue);
 
 QT_END_NAMESPACE
diff --git a/src/plugins/platforms/ios/qiosglobal.mm b/src/plugins/platforms/ios/qiosglobal.mm
index 71d5a5808859deaf02e3a6807c4cd20f5c1611d7..9f10c3e2876deab3834f3e8de86d6cb6c04b272f 100644
--- a/src/plugins/platforms/ios/qiosglobal.mm
+++ b/src/plugins/platforms/ios/qiosglobal.mm
@@ -127,15 +127,6 @@ UIDeviceOrientation fromQtScreenOrientation(Qt::ScreenOrientation qtOrientation)
     return uiOrientation;
 }
 
-QRect fromPortraitToPrimary(const QRect &rect, QPlatformScreen *screen)
-{
-    // UIScreen is always in portrait. Use this function to convert CGRects
-    // aligned with UIScreen into whatever is the current orientation of QScreen.
-    QRect geometry = screen->geometry();
-    return geometry.width() < geometry.height() ? rect
-        : QRect(rect.y(), geometry.height() - rect.width() - rect.x(), rect.height(), rect.width());
-}
-
 int infoPlistValue(NSString* key, int defaultValue)
 {
     static NSBundle *bundle = [NSBundle mainBundle];