diff --git a/src/editor/kmcomposerwin.cpp b/src/editor/kmcomposerwin.cpp
index 4dfae0249..2f85075e9 100644
--- a/src/editor/kmcomposerwin.cpp
+++ b/src/editor/kmcomposerwin.cpp
@@ -454,7 +454,7 @@ KMComposerWin::KMComposerWin(const KMime::Message::Ptr &aMsg, bool lastSignState
     applyMainWindowSettings(KMKernel::self()->config()->group("Composer"));
 
     mUpdateWindowTitleConnection = connect(mEdtSubject, &PimCommon::LineEditWithAutoCorrection::textChanged, this, &KMComposerWin::slotUpdateWindowTitle);
-    mIdentityConnection = connect(identity, &KIdentityManagement::IdentityCombo::identityChanged, [this](uint val) {
+    mIdentityConnection = connect(identity, &KIdentityManagement::IdentityCombo::identityChanged, this, [this](uint val) {
         slotIdentityChanged(val);
     });
     connect(kmkernel->identityManager(), qOverload<uint>(&KIdentityManagement::IdentityManager::changed), this, [this](uint val) {
@@ -642,7 +642,7 @@ void KMComposerWin::addAttachmentsAndSend(const QList<QUrl> &urls, const QString
     send(how);
 }
 
-void KMComposerWin::addAttachment(const QList<AttachmentInfo> &infos, bool showWarning)
+void KMComposerWin::addAttachment(const QList<KMail::Composer::AttachmentInfo> &infos, bool showWarning)
 {
     QStringList lst;
     for (const AttachmentInfo &info : infos) {
@@ -1658,7 +1658,7 @@ void KMComposerWin::setMessage(const KMime::Message::Ptr &newMsg, bool lastSignS
 
     // load the mId into the gui, sticky or not, without emitting
     mComposerBase->identityCombo()->setCurrentIdentity(mId);
-    mIdentityConnection = connect(mComposerBase->identityCombo(), &KIdentityManagement::IdentityCombo::identityChanged, [this](uint val) {
+    mIdentityConnection = connect(mComposerBase->identityCombo(), &KIdentityManagement::IdentityCombo::identityChanged, this, [this](uint val) {
         slotIdentityChanged(val);
     });
 
diff --git a/src/editor/kmcomposerwin.h b/src/editor/kmcomposerwin.h
index 825c51272..4da61cb3c 100644
--- a/src/editor/kmcomposerwin.h
+++ b/src/editor/kmcomposerwin.h
@@ -145,7 +145,7 @@ public Q_SLOTS:
 
     void addAttachmentsAndSend(const QList<QUrl> &urls, const QString &comment, int how) override;
 
-    void addAttachment(const QList<AttachmentInfo> &infos, bool showWarning) override;
+    void addAttachment(const QList<KMail::Composer::AttachmentInfo> &infos, bool showWarning) override;
 
     void addAttachment(const QString &name, KMime::Headers::contentEncoding cte, const QString &charset, const QByteArray &data, const QByteArray &mimeType) override;
 
diff --git a/src/kmkernel.cpp b/src/kmkernel.cpp
index b7a55dc85..2183e3ec0 100644
--- a/src/kmkernel.cpp
+++ b/src/kmkernel.cpp
@@ -398,7 +398,8 @@ bool KMKernel::handleCommandLine(bool noArgsOpensReader, const QStringList &args
     if (!calledWithSession) {
         // only read additional command line arguments if kmail/kontact is
         // not called with "-session foo"
-        for (const QString &arg : parser.positionalArguments()) {
+        const QStringList lstPositionalArguments = parser.positionalArguments();
+        for (const QString &arg : lstPositionalArguments) {
             if (arg.startsWith(QLatin1String("mailto:"), Qt::CaseInsensitive)) {
                 const QUrl urlDecoded(QUrl::fromPercentEncoding(arg.toUtf8()));
                 const QVector<QPair<QString, QString> > values = MessageCore::StringUtil::parseMailtoUrl(urlDecoded);
diff --git a/src/kmreaderwin.cpp b/src/kmreaderwin.cpp
index 3e9d396ac..50d7f47a0 100644
--- a/src/kmreaderwin.cpp
+++ b/src/kmreaderwin.cpp
@@ -302,13 +302,13 @@ QString KMReaderWin::newFeaturesMD5()
 void KMReaderWin::displaySplashPage(const QString &templateName, const QVariantHash &_data)
 {
     QVariantHash data = _data;
-    if (!data.contains(QLatin1String("icon"))) {
+    if (!data.contains(QStringLiteral("icon"))) {
         data[QStringLiteral("icon")] = QStringLiteral("kmail");
     }
-    if (!data.contains(QLatin1String("name"))) {
+    if (!data.contains(QStringLiteral("name"))) {
         data[QStringLiteral("name")] = i18n("KMail");
     }
-    if (!data.contains(QLatin1String("subtitle"))) {
+    if (!data.contains(QStringLiteral("subtitle"))) {
         data[QStringLiteral("subtitle")] = i18n("The KDE Mail Client");
     }
 
diff --git a/src/searchdialog/kmsearchmessagemodel.cpp b/src/searchdialog/kmsearchmessagemodel.cpp
index bc8438ebe..5a4fa3b35 100644
--- a/src/searchdialog/kmsearchmessagemodel.cpp
+++ b/src/searchdialog/kmsearchmessagemodel.cpp
@@ -109,9 +109,9 @@ static QString toolTip(const Akonadi::Item &item)
             tip += htmlCodeForStandardRow.arg(i18n("Preview"), content.replace(QLatin1Char('\n'), QStringLiteral("<br>")));
         }
     } else {
-        tip += htmlCodeForStandardRow.arg(msg->from()->displayString()).arg(i18n("From"));
-        tip += htmlCodeForStandardRow.arg(msg->to()->displayString()).arg(i18nc("Receiver of the email", "To"));
-        tip += htmlCodeForStandardRow.arg(QLocale().toString(msg->date()->dateTime())).arg(i18n("Date"));
+        tip += htmlCodeForStandardRow.arg(msg->from()->displayString(), i18n("From"));
+        tip += htmlCodeForStandardRow.arg(msg->to()->displayString(), i18nc("Receiver of the email", "To"));
+        tip += htmlCodeForStandardRow.arg(QLocale().toString(msg->date()->dateTime()), i18n("Date"));
         if (!content.isEmpty()) {
             tip += htmlCodeForStandardRow.arg(content.replace(QLatin1Char('\n'), QStringLiteral("<br>")), i18n("Preview"));
         }