diff --git a/src/gui/platform/unix/dbustray/qdbustraytypes.cpp b/src/gui/platform/unix/dbustray/qdbustraytypes.cpp
index f2fec41aff5..4408bfae5a0 100644
--- a/src/gui/platform/unix/dbustray/qdbustraytypes.cpp
+++ b/src/gui/platform/unix/dbustray/qdbustraytypes.cpp
@@ -108,10 +108,7 @@ QXdgDBusImageVector iconToQXdgDBusImageVector(const QIcon &icon)
         }
         // copy and endian-convert
         QXdgDBusImageStruct kim(im.width(), im.height());
-        const uchar *end = im.constBits() + im.sizeInBytes();
-        uchar *dest = reinterpret_cast<uchar *>(kim.data.data());
-        for (const uchar *src = im.constBits(); src < end; src += 4, dest += 4)
-            qToUnaligned(qToBigEndian<quint32>(qFromUnaligned<quint32>(src)), dest);
+        qToBigEndian<quint32>(im.constBits(), im.width() * im.height(), kim.data.data());
 
         ret << kim;
     }