diff --git a/src/common/QskMetaFunction.cpp b/src/common/QskMetaFunction.cpp
index 45f7e7cb..8ad62073 100644
--- a/src/common/QskMetaFunction.cpp
+++ b/src/common/QskMetaFunction.cpp
@@ -7,9 +7,7 @@
 
 #include <qcoreapplication.h>
 #include <qobject.h>
-#if QT_CONFIG(thread)
 #include <qsemaphore.h>
-#endif
 #include <qthread.h>
 
 QSK_QT_PRIVATE_BEGIN
@@ -190,8 +188,6 @@ void QskMetaFunction::invoke( QObject* object,
             ? Qt::QueuedConnection : Qt::DirectConnection;
     }
 
-    const auto argc = parameterCount() + 1; // return value + arguments
-
     switch ( invokeType )
     {
         case Qt::DirectConnection:
@@ -215,7 +211,7 @@ void QskMetaFunction::invoke( QObject* object,
                 m_functionCall, nullptr, 0, argv, &semaphore );
 #else
             auto event = new QMetaCallEvent(
-                m_functionCall, nullptr, 0, argc );
+                m_functionCall, nullptr, 0, argv, nullptr );
 #endif
 
             QCoreApplication::postEvent( receiver, event );
@@ -231,6 +227,8 @@ void QskMetaFunction::invoke( QObject* object,
             if ( receiver.isNull() )
                 return;
 
+            const auto argc = parameterCount() + 1; // return value + arguments
+
             auto event = new QMetaCallEvent( m_functionCall, nullptr, 0, argc );
 
             auto types = event->types();
diff --git a/src/common/QskMetaInvokable.cpp b/src/common/QskMetaInvokable.cpp
index 27828c3b..cc372bbc 100644
--- a/src/common/QskMetaInvokable.cpp
+++ b/src/common/QskMetaInvokable.cpp
@@ -9,9 +9,7 @@
 #include <qmetaobject.h>
 #include <qobject.h>
 #include <qcoreapplication.h>
-#if QT_CONFIG(thread)
 #include <qsemaphore.h>
-#endif
 #include <qthread.h>
 
 QSK_QT_PRIVATE_BEGIN
@@ -165,12 +163,6 @@ static void qskInvokeMetaCall(
             ? Qt::QueuedConnection : Qt::DirectConnection;
     }
 
-#if 1
-    // should be doable without QMetaMethod. TODO ...
-    const auto method = metaObject->method( offset + index );
-#endif
-    const int argc = method.parameterCount() + 1;
-
     switch ( invokeType )
     {
         case Qt::DirectConnection:
@@ -208,7 +200,7 @@ static void qskInvokeMetaCall(
 
 #else
             auto event = new MetaCallEvent( call, metaObject,
-                offset, index, argc );
+                offset, index, args, nullptr );
 #endif
 
             QCoreApplication::postEvent( receiver, event );
@@ -228,6 +220,12 @@ static void qskInvokeMetaCall(
 
             if ( call == QMetaObject::InvokeMetaMethod )
             {
+#if 1
+                // should be doable without QMetaMethod. TODO ...
+                const auto method = metaObject->method( offset + index );
+#endif
+                const int argc = method.parameterCount() + 1;
+
                 event = new MetaCallEvent( call, metaObject, offset, index, argc );
 
                 /*