diff --git a/src/blackcore/application.cpp b/src/blackcore/application.cpp
index acc8664fa..c01a22719 100644
--- a/src/blackcore/application.cpp
+++ b/src/blackcore/application.cpp
@@ -747,7 +747,7 @@ namespace BlackCore
         if (!fi.dir().exists()) { return nullptr; }
 
         // function called with reply when done
-        CallbackSlot callbackSlot([ = ](QNetworkReply * reply)
+        CallbackSlot callbackSlot(this, [ = ](QNetworkReply * reply)
         {
             QScopedPointer<QNetworkReply, QScopedPointerDeleteLater> nwReply(reply);
             CStatusMessage msg;
@@ -769,9 +769,8 @@ namespace BlackCore
                 callback(msg);
             });
         });
-        callbackSlot.setObject(this); // object for thread
 
-        ProgressSlot progressSlot([ = ](int, qint64, qint64, const QUrl &)
+        ProgressSlot progressSlot(this, [ = ](int, qint64, qint64, const QUrl &)
         {
             // so far not implemented
         });
diff --git a/src/blackmisc/slot.h b/src/blackmisc/slot.h
index 5752d1f17..c712367ba 100644
--- a/src/blackmisc/slot.h
+++ b/src/blackmisc/slot.h
@@ -83,11 +83,6 @@ namespace BlackMisc
             Q_ASSERT_X(object, Q_FUNC_INFO, "Need object");
         }
 
-        //! Construct a slot from the given object passing a function
-        CSlot(std::function<R(Args...)> function) :
-            m_function(function)
-        {}
-
         //! Construct a slot from the given object passing a function and a object
         template <typename T>
         CSlot(T *object, std::function<R(Args...)> function) :