diff --git a/tests/auto/qimage/tst_qimage.cpp b/tests/auto/qimage/tst_qimage.cpp
index 4336feba7a..dce2957ae4 100644
--- a/tests/auto/qimage/tst_qimage.cpp
+++ b/tests/auto/qimage/tst_qimage.cpp
@@ -1986,7 +1986,7 @@ void tst_QImage::rgbSwapped()
 
     QCOMPARE(image, imageSwappedTwice);
 
-    QCOMPARE(memcmp(image.constBits(), imageSwappedTwice.constBits(), image.numBytes()), 0);
+    QCOMPARE(memcmp(image.constBits(), imageSwappedTwice.constBits(), image.byteCount()), 0);
 }
 
 void tst_QImage::deepCopyWhenPaintingActive()