diff --git a/src/widgets/osd_x11.cpp b/src/widgets/osd_x11.cpp
index e4f8462eb..92cf876ab 100644
--- a/src/widgets/osd_x11.cpp
+++ b/src/widgets/osd_x11.cpp
@@ -91,7 +91,7 @@ QDBusArgument &operator<<(QDBusArgument &arg, const QImage &image) {
   int channels = i.isGrayscale() ? 1 : (i.hasAlphaChannel() ? 4 : 3);
   arg << i.depth() / channels;
   arg << channels;
-  arg << QByteArray(reinterpret_cast<const char*>(i.bits()), i.byteCount());
+  arg << QByteArray(reinterpret_cast<const char*>(i.bits()), i.sizeInBytes());
   arg.endStructure();
   return arg;