diff --git a/src/mdn/sendmdnhandler.cpp b/src/mdn/sendmdnhandler.cpp
index 38d097c..c55e2a9 100644
--- a/src/mdn/sendmdnhandler.cpp
+++ b/src/mdn/sendmdnhandler.cpp
@@ -111,7 +111,7 @@ SendMdnHandler::SendMdnHandler(IKernel *kernel, QObject *parent)
     , d(new Private(this, kernel))
 {
     d->mTimer.setSingleShot(true);
-    connect(&d->mTimer, SIGNAL(timeout()), this, SLOT(handleMessages()));
+    connect(&d->mTimer, &QTimer::timeout, this, [this]() { d->handleMessages(); });
 }
 
 SendMdnHandler::~SendMdnHandler()
diff --git a/src/mdn/sendmdnhandler.h b/src/mdn/sendmdnhandler.h
index 652250e..f5841a1 100644
--- a/src/mdn/sendmdnhandler.h
+++ b/src/mdn/sendmdnhandler.h
@@ -60,8 +60,6 @@ private:
     //@cond PRIVATE
     class Private;
     Private *const d;
-
-    Q_PRIVATE_SLOT(d, void handleMessages())
     //@endcond
 };
 }
diff --git a/src/snippets/snippetsmanager.cpp b/src/snippets/snippetsmanager.cpp
index 1a9b05a..03bd596 100644
--- a/src/snippets/snippetsmanager.cpp
+++ b/src/snippets/snippetsmanager.cpp
@@ -613,20 +613,20 @@ SnippetsManager::SnippetsManager(KActionCollection *actionCollection, QObject *p
 
     d->mInsertSnippetAction = new QAction(i18n("Insert Snippet"), this);
 
-    connect(d->mSelectionModel, SIGNAL(selectionChanged(QItemSelection,QItemSelection)),
-            this, SLOT(selectionChanged()));
-    connect(d->mModel, SIGNAL(dndDone()), SLOT(dndDone()));
-    connect(d->mModel, SIGNAL(addNewDndSnippset(QString)), this, SLOT(slotAddNewDndSnippset(QString)));
+    connect(d->mSelectionModel, &QItemSelectionModel::selectionChanged,
+            this, [this]() {d->selectionChanged();});
+    connect(d->mModel, &SnippetsModel::dndDone, this, [this]() { d->dndDone();} );
+    connect(d->mModel, &SnippetsModel::addNewDndSnippset, this, [this](const QString &str) { d->slotAddNewDndSnippset(str); });
 
-    connect(d->mAddSnippetAction, SIGNAL(triggered(bool)), SLOT(addSnippet()));
-    connect(d->mEditSnippetAction, SIGNAL(triggered(bool)), SLOT(editSnippet()));
-    connect(d->mDeleteSnippetAction, SIGNAL(triggered(bool)), SLOT(deleteSnippet()));
+    connect(d->mAddSnippetAction, &QAction::triggered, this, [this]() { d->addSnippet(); });
+    connect(d->mEditSnippetAction, &QAction::triggered, this, [this]() { d->editSnippet(); });
+    connect(d->mDeleteSnippetAction, &QAction::triggered, this, [this]() { d->deleteSnippet(); });
 
-    connect(d->mAddSnippetGroupAction, SIGNAL(triggered(bool)), SLOT(addSnippetGroup()));
-    connect(d->mEditSnippetGroupAction, SIGNAL(triggered(bool)), SLOT(editSnippetGroup()));
-    connect(d->mDeleteSnippetGroupAction, SIGNAL(triggered(bool)), SLOT(deleteSnippetGroup()));
+    connect(d->mAddSnippetGroupAction, &QAction::triggered, this, [this]() { d->addSnippetGroup(); });
+    connect(d->mEditSnippetGroupAction, &QAction::triggered, this, [this]() { d->editSnippetGroup(); });
+    connect(d->mDeleteSnippetGroupAction, &QAction::triggered, this, [this]() { d->deleteSnippetGroup(); });
 
-    connect(d->mInsertSnippetAction, SIGNAL(triggered(bool)), SLOT(insertSelectedSnippet()));
+    connect(d->mInsertSnippetAction, &QAction::triggered, this, [this]() { d->insertSelectedSnippet(); });
 
     d->selectionChanged();
 
diff --git a/src/snippets/snippetsmanager.h b/src/snippets/snippetsmanager.h
index 97d1da3..c7078c1 100644
--- a/src/snippets/snippetsmanager.h
+++ b/src/snippets/snippetsmanager.h
@@ -146,18 +146,6 @@ private:
     //@cond PRIVATE
     class Private;
     Private *const d;
-
-    Q_PRIVATE_SLOT(d, void selectionChanged())
-    Q_PRIVATE_SLOT(d, void addSnippet())
-    Q_PRIVATE_SLOT(d, void editSnippet())
-    Q_PRIVATE_SLOT(d, void deleteSnippet())
-    Q_PRIVATE_SLOT(d, void addSnippetGroup())
-    Q_PRIVATE_SLOT(d, void editSnippetGroup())
-    Q_PRIVATE_SLOT(d, void deleteSnippetGroup())
-    Q_PRIVATE_SLOT(d, void insertSelectedSnippet())
-    Q_PRIVATE_SLOT(d, void insertActionSnippet())
-    Q_PRIVATE_SLOT(d, void dndDone())
-    Q_PRIVATE_SLOT(d, void slotAddNewDndSnippset(QString))
     //@endcond
 };
 }
diff --git a/src/widgets/redirectdialog.cpp b/src/widgets/redirectdialog.cpp
index 06d577b..088f54f 100644
--- a/src/widgets/redirectdialog.cpp
+++ b/src/widgets/redirectdialog.cpp
@@ -162,7 +162,7 @@ RedirectDialog::RedirectDialog(SendMode mode, QWidget *parent)
     mainLayout->addWidget(d->mEditTo);
     formLayout->addRow(d->redirectLabelType(RedirectDialog::Private::ResendTo), d->mEditTo);
 
-    connect(d->mEditTo, SIGNAL(addressChanged(QString)), SLOT(slotAddressChanged(QString)));
+    connect(d->mEditTo, &RedirectWidget::addressChanged, this, [this](const QString &str) { d->slotAddressChanged(str);} );
 
     d->mEditCc = new RedirectWidget;
     formLayout->addRow(d->redirectLabelType(RedirectDialog::Private::ResendCc), d->mEditCc);
@@ -188,8 +188,8 @@ RedirectDialog::RedirectDialog(SendMode mode, QWidget *parent)
 
     KGuiItem::assign(d->mUser1Button, KGuiItem(i18n("&Send Now")));
     KGuiItem::assign(d->mUser2Button, KGuiItem(i18n("Send &Later")));
-    connect(d->mUser1Button, SIGNAL(clicked()), this, SLOT(slotUser1()));
-    connect(d->mUser2Button, SIGNAL(clicked()), this, SLOT(slotUser2()));
+    connect(d->mUser1Button, &QPushButton::clicked, this, [this]() { d->slotUser1(); });
+    connect(d->mUser2Button, &QPushButton::clicked, this, [this]() { d->slotUser2(); });
 
     d->mUser1Button->setEnabled(false);
     d->mUser2Button->setEnabled(false);
diff --git a/src/widgets/redirectdialog.h b/src/widgets/redirectdialog.h
index eb30d4c..1dadb1d 100644
--- a/src/widgets/redirectdialog.h
+++ b/src/widgets/redirectdialog.h
@@ -93,10 +93,6 @@ private:
     //@cond PRIVATE
     class Private;
     Private *const d;
-
-    Q_PRIVATE_SLOT(d, void slotUser1())
-    Q_PRIVATE_SLOT(d, void slotUser2())
-    Q_PRIVATE_SLOT(d, void slotAddressChanged(const QString &))
     //@endcond
 };
 }