diff --git a/src/tools/qdbusxml2cpp/qdbusxml2cpp.cpp b/src/tools/qdbusxml2cpp/qdbusxml2cpp.cpp
index d637854d2bb..1acb83df36b 100644
--- a/src/tools/qdbusxml2cpp/qdbusxml2cpp.cpp
+++ b/src/tools/qdbusxml2cpp/qdbusxml2cpp.cpp
@@ -1065,9 +1065,10 @@ void QDBusXmlToCpp::writeAdaptor(const QString &filename,
 
             if (usingInvokeMethod) {
                 // we are using QMetaObject::invokeMethod
-                if (!returnType.isEmpty())
+                if (!returnType.isEmpty()) {
                     cs << "    " << returnType << " " << argNames.at(method.inputArgs.size())
-                       << ";\n";
+                       << "{};\n";
+                }
 
                 static const char invoke[] = "    QMetaObject::invokeMethod(parent(), \"";
                 cs << invoke << name << "\"";
diff --git a/tests/auto/tools/qdbusxml2cpp/tst_qdbusxml2cpp.cpp b/tests/auto/tools/qdbusxml2cpp/tst_qdbusxml2cpp.cpp
index c51a0909f8d..db7d462014d 100644
--- a/tests/auto/tools/qdbusxml2cpp/tst_qdbusxml2cpp.cpp
+++ b/tests/auto/tools/qdbusxml2cpp/tst_qdbusxml2cpp.cpp
@@ -201,7 +201,9 @@ void tst_qdbusxml2cpp::process_data()
                    .arg(basicTypeList[i].dbusType)
                 << QRegularExpression(QString("Q_SLOTS:.*\\bQDBusPendingReply<%1> Method\\((const )?%1 ")
                                       .arg(basicTypeList[i].cppType), QRegularExpression::DotMatchesEverythingOption)
-                << QRegularExpression(QString("Q_SLOTS:.*\\b%1 Method\\((const )?%1 ")
+                << QRegularExpression(QString("Q_SLOTS:.*\\b%1 Method\\((const )?%1 &?in0\\);"
+                                              ".*%1 .*::Method\\((const )?%1 &?in0\\)\n{\n"
+                                              ".*%1 out0{};")
                                       .arg(basicTypeList[i].cppType), QRegularExpression::DotMatchesEverythingOption);
     }
 
@@ -224,7 +226,9 @@ void tst_qdbusxml2cpp::process_data()
                "</method>"
             << QRegularExpression("Q_SLOTS:.*\\bQDBusPendingReply<Point> Method\\(PointF ",
                                   QRegularExpression::DotMatchesEverythingOption)
-            << QRegularExpression("Q_SLOTS:.*\\bPoint Method\\(PointF ",
+            << QRegularExpression("Q_SLOTS:.*\\bPoint Method\\(PointF in0\\);"
+                                  ".*Point .*::Method\\(PointF in0\\)\n{\n"
+                                  ".*Point out0{};",
                                   QRegularExpression::DotMatchesEverythingOption);
 
     QTest::newRow("method-ss")