diff --git a/src/plugins/platforms/xcb/nativepainting/qpaintengine_x11.cpp b/src/plugins/platforms/xcb/nativepainting/qpaintengine_x11.cpp
index f630f538aa7..743ff92654e 100644
--- a/src/plugins/platforms/xcb/nativepainting/qpaintengine_x11.cpp
+++ b/src/plugins/platforms/xcb/nativepainting/qpaintengine_x11.cpp
@@ -2134,7 +2134,7 @@ void QX11PaintEngine::drawPixmap(const QRectF &r, const QPixmap &px, const QRect
         XFillRectangle(d->dpy, d->hd, d->gc, x, y, sw, sh);
         restore_clip = true;
     } else if (mono_dst && !mono_src) {
-        QBitmap bitmap(pixmap);
+        QBitmap bitmap = QBitmap::fromPixmap(pixmap);
         XCopyArea(d->dpy, qt_x11PixmapHandle(bitmap), d->hd, d->gc, sx, sy, sw, sh, x, y);
     } else {
         XCopyArea(d->dpy, qt_x11PixmapHandle(pixmap), d->hd, d->gc, sx, sy, sw, sh, x, y);
diff --git a/src/plugins/platforms/xcb/nativepainting/qpixmap_x11.cpp b/src/plugins/platforms/xcb/nativepainting/qpixmap_x11.cpp
index 186a3cf9d74..a4e820ea921 100644
--- a/src/plugins/platforms/xcb/nativepainting/qpixmap_x11.cpp
+++ b/src/plugins/platforms/xcb/nativepainting/qpixmap_x11.cpp
@@ -1314,7 +1314,7 @@ QBitmap QX11PlatformPixmap::mask() const
 #endif
     if (d == 1) {
         QX11PlatformPixmap *that = const_cast<QX11PlatformPixmap*>(this);
-        mask = QPixmap(that);
+        mask = QBitmap::fromPixmap(QPixmap(that));
     } else {
         mask = mask_to_bitmap(xinfo.screen());
     }