diff --git a/plugins/advancedviewplugin/advancedviewdialog.cpp b/plugins/advancedviewplugin/advancedviewdialog.cpp
index c3ab43e..e25f390 100644
--- a/plugins/advancedviewplugin/advancedviewdialog.cpp
+++ b/plugins/advancedviewplugin/advancedviewdialog.cpp
@@ -29,6 +29,7 @@ AdvancedViewDialog::AdvancedViewDialog(StripsWidget &stripsWidget) :
     m_timeAssignmentsModel(new TimeAssignmentsModel(stripsWidget, this))
 {
     ui->setupUi(this);
+    setWindowFlag(Qt::WindowContextHelpButtonHint, false);
 
     ui->bookingsView->setModel(m_bookingsModel);
     ui->bookingsView->setEnabled(m_bookingsModel->enabled());
diff --git a/plugins/advancedviewplugin/dialogs/bookingdialog.cpp b/plugins/advancedviewplugin/dialogs/bookingdialog.cpp
index 768e872..0ebcb31 100644
--- a/plugins/advancedviewplugin/dialogs/bookingdialog.cpp
+++ b/plugins/advancedviewplugin/dialogs/bookingdialog.cpp
@@ -6,6 +6,7 @@ BookingDialog::BookingDialog(QWidget *parent) :
     ui(new Ui::BookingDialog)
 {
     ui->setupUi(this);
+    setWindowFlag(Qt::WindowContextHelpButtonHint, false);
 }
 
 BookingDialog::~BookingDialog()
diff --git a/plugins/advancedviewplugin/dialogs/timeassignmentdialog.cpp b/plugins/advancedviewplugin/dialogs/timeassignmentdialog.cpp
index 8f1c6d4..894430c 100644
--- a/plugins/advancedviewplugin/dialogs/timeassignmentdialog.cpp
+++ b/plugins/advancedviewplugin/dialogs/timeassignmentdialog.cpp
@@ -13,6 +13,7 @@ TimeAssignmentDialog::TimeAssignmentDialog(const QMap<QString, QString> &project
     ui(new Ui::TimeAssignmentDialog)
 {
     ui->setupUi(this);
+    setWindowFlag(Qt::WindowContextHelpButtonHint, false);
 
     {
         for(const auto &preferedProject : settings.projects())
diff --git a/plugins/devtoolsplugin/logdialog.cpp b/plugins/devtoolsplugin/logdialog.cpp
index 8605398..0780c99 100644
--- a/plugins/devtoolsplugin/logdialog.cpp
+++ b/plugins/devtoolsplugin/logdialog.cpp
@@ -6,6 +6,7 @@ LogDialog::LogDialog(QWidget *parent) :
     ui(new Ui::LogDialog)
 {
     ui->setupUi(this);
+    setWindowFlag(Qt::WindowContextHelpButtonHint, false);
 }
 
 LogDialog::~LogDialog()
diff --git a/plugins/lunchmealplugin/lunchmealdialog.cpp b/plugins/lunchmealplugin/lunchmealdialog.cpp
index a61dd57..6627216 100644
--- a/plugins/lunchmealplugin/lunchmealdialog.cpp
+++ b/plugins/lunchmealplugin/lunchmealdialog.cpp
@@ -16,6 +16,7 @@ LunchMealDialog::LunchMealDialog(StripsWidget &stripsWidget) :
     ui(new Ui::LunchMealDialog)
 {
     ui->setupUi(this);
+    setWindowFlag(Qt::WindowContextHelpButtonHint, false);
 
     ui->labelTitle->setText(tr("Lunch meal for %0").arg(stripsWidget.date().toString(tr("dd.MM.yyyy"))));
 
diff --git a/plugins/profileplugin/profiledialog.cpp b/plugins/profileplugin/profiledialog.cpp
index 1a52589..6db4220 100644
--- a/plugins/profileplugin/profiledialog.cpp
+++ b/plugins/profileplugin/profiledialog.cpp
@@ -6,6 +6,7 @@ ProfileDialog::ProfileDialog(const GetUserInfoReply::UserInfo &userInfo, QWidget
     ui(new Ui::ProfileDialog)
 {
     ui->setupUi(this);
+    setWindowFlag(Qt::WindowContextHelpButtonHint, false);
 
     ui->spinBoxUserId->setValue(userInfo.userId);
     ui->lineEditEmail->setText(userInfo.email);
diff --git a/plugins/updaterplugin/updaterdialog.cpp b/plugins/updaterplugin/updaterdialog.cpp
index 74272d4..32781e2 100644
--- a/plugins/updaterplugin/updaterdialog.cpp
+++ b/plugins/updaterplugin/updaterdialog.cpp
@@ -24,6 +24,7 @@ UpdaterDialog::UpdaterDialog(MainWindow &mainWindow) :
     m_mainWindow(mainWindow)
 {
     ui->setupUi(this);
+    setWindowFlag(Qt::WindowContextHelpButtonHint, false);
 
     setAttribute(Qt::WA_DeleteOnClose);
 
diff --git a/plugins/webradioplugin/webradiodialog.cpp b/plugins/webradioplugin/webradiodialog.cpp
index b8ddc01..68b64cb 100644
--- a/plugins/webradioplugin/webradiodialog.cpp
+++ b/plugins/webradioplugin/webradiodialog.cpp
@@ -11,6 +11,7 @@ WebRadioDialog::WebRadioDialog(MainWindow &mainWindow) :
     m_player(new QMediaPlayer(this))
 {
     ui->setupUi(this);
+    setWindowFlag(Qt::WindowContextHelpButtonHint, false);
 
     connect(m_player, &QMediaPlayer::stateChanged, this, &WebRadioDialog::stateChanged);
     connect(m_player, &QMediaPlayer::stateChanged, this, &WebRadioDialog::updateWidgets);
diff --git a/zeiterfassungguilib/dialogs/authenticationdialog.cpp b/zeiterfassungguilib/dialogs/authenticationdialog.cpp
index 5de7cf2..72b68c6 100644
--- a/zeiterfassungguilib/dialogs/authenticationdialog.cpp
+++ b/zeiterfassungguilib/dialogs/authenticationdialog.cpp
@@ -6,6 +6,7 @@ AuthenticationDialog::AuthenticationDialog(QWidget *parent) :
     ui(new Ui::AuthenticationDialog)
 {
     ui->setupUi(this);
+    setWindowFlag(Qt::WindowContextHelpButtonHint, false);
 }
 
 AuthenticationDialog::~AuthenticationDialog()
diff --git a/zeiterfassungguilib/dialogs/languageselectiondialog.cpp b/zeiterfassungguilib/dialogs/languageselectiondialog.cpp
index 3cf0c6a..ae5195c 100644
--- a/zeiterfassungguilib/dialogs/languageselectiondialog.cpp
+++ b/zeiterfassungguilib/dialogs/languageselectiondialog.cpp
@@ -6,6 +6,7 @@ LanguageSelectionDialog::LanguageSelectionDialog(QWidget *parent) :
     ui(new Ui::LanguageSelectionDialog)
 {
     ui->setupUi(this);
+    setWindowFlag(Qt::WindowContextHelpButtonHint, false);
 
     ui->comboBoxLanguage->addItem(tr("English"), QLocale::English);
     ui->comboBoxLanguage->addItem(tr("German"), QLocale::German);
diff --git a/zeiterfassungguilib/dialogs/settingsdialog.cpp b/zeiterfassungguilib/dialogs/settingsdialog.cpp
index 0532c8a..c00ec0e 100644
--- a/zeiterfassungguilib/dialogs/settingsdialog.cpp
+++ b/zeiterfassungguilib/dialogs/settingsdialog.cpp
@@ -16,6 +16,7 @@ SettingsDialog::SettingsDialog(ZeiterfassungSettings &settings, QWidget *parent)
     m_settings(settings)
 {
     ui->setupUi(this);
+    setWindowFlag(Qt::WindowContextHelpButtonHint, false);
 
     ui->comboBoxLanguage->addItem(tr("English"), QLocale::English);
     ui->comboBoxLanguage->addItem(tr("German"), QLocale::German);