diff --git a/cpp/module_proxy.cpp b/cpp/module_proxy.cpp
index f18f2d2..c87e825 100644
--- a/cpp/module_proxy.cpp
+++ b/cpp/module_proxy.cpp
@@ -84,6 +84,16 @@ namespace {
                     );
                     break;
                 }
+                case QMetaType::QByteArray: {
+                    auto value = new QByteArray{arg.toByteArray()};
+                    scopedArgs.emplace_back(
+                        Q_ARG(QByteArray, *value),
+                        [](const void* data) {
+                            delete static_cast<const QByteArray*>(data);
+                        }
+                    );
+                    break;
+                }
                 case QMetaType::QString:
                 default: {
                     auto value = new QString{arg.toString()};