diff --git a/src/gui/image/qimage.cpp b/src/gui/image/qimage.cpp
index 234742e6b93..69ff27dc735 100644
--- a/src/gui/image/qimage.cpp
+++ b/src/gui/image/qimage.cpp
@@ -2324,7 +2324,7 @@ static bool convert_RGB_to_RGB16_inplace(QImageData *data, Qt::ImageConversionFl
 static void convert_ARGB_PM_to_ARGB(QImageData *dest, const QImageData *src, Qt::ImageConversionFlags)
 {
     Q_ASSERT(src->format == QImage::Format_ARGB32_Premultiplied || src->format == QImage::Format_RGBA8888_Premultiplied);
-    Q_ASSERT(dest->format == QImage::Format_ARGB32 || src->format == QImage::Format_RGBA8888);
+    Q_ASSERT(dest->format == QImage::Format_ARGB32 || dest->format == QImage::Format_RGBA8888);
     Q_ASSERT(src->width == dest->width);
     Q_ASSERT(src->height == dest->height);