diff --git a/share/qtcreator/qml/qmlpuppet/qml2puppet/instances/quick3dnodeinstance.cpp b/share/qtcreator/qml/qmlpuppet/qml2puppet/instances/quick3dnodeinstance.cpp
index 65bda831a6e..ec0beb521df 100644
--- a/share/qtcreator/qml/qmlpuppet/qml2puppet/instances/quick3dnodeinstance.cpp
+++ b/share/qtcreator/qml/qmlpuppet/qml2puppet/instances/quick3dnodeinstance.cpp
@@ -179,6 +179,8 @@ QImage Quick3DNodeInstance::renderPreviewImage(const QSize &previewImageSize) co
             return transparentImage;
         }
     }
+#else
+    Q_UNUSED(previewImageSize)
 #endif
     return {};
 }
diff --git a/src/plugins/cmakeprojectmanager/cmakebuildconfiguration.cpp b/src/plugins/cmakeprojectmanager/cmakebuildconfiguration.cpp
index 46a0c0e54d5..69e4d01dd09 100644
--- a/src/plugins/cmakeprojectmanager/cmakebuildconfiguration.cpp
+++ b/src/plugins/cmakeprojectmanager/cmakebuildconfiguration.cpp
@@ -488,14 +488,14 @@ CMakeBuildSettingsWidget::CMakeBuildSettingsWidget(CMakeBuildConfiguration *bc)
         if (m_buildConfiguration->isEnabled())
             setError(QString());
     });
-    connect(this, &QObject::destroyed, this, [this](const QObject *obj) {
+    connect(this, &QObject::destroyed, this, [this] {
         updateInitialCMakeArguments();
     });
 
     connect(bc->aspect<InitialCMakeArgumentsAspect>(),
             &Utils::BaseAspect::labelLinkActivated,
             this,
-            [this](const QString &link) {
+            [this](const QString &) {
                 const CMakeTool *tool = CMakeKitAspect::cmakeTool(
                     m_buildConfiguration->target()->kit());
                 CMakeTool::openCMakeHelpUrl(tool, "%1/manual/cmake.1.html#options");
@@ -503,7 +503,7 @@ CMakeBuildSettingsWidget::CMakeBuildSettingsWidget(CMakeBuildConfiguration *bc)
     connect(bc->aspect<AdditionalCMakeOptionsAspect>(),
             &Utils::BaseAspect::labelLinkActivated,
             this,
-            [this](const QString &link) {
+            [this](const QString &) {
                 const CMakeTool *tool = CMakeKitAspect::cmakeTool(
                     m_buildConfiguration->target()->kit());
                 CMakeTool::openCMakeHelpUrl(tool, "%1/manual/cmake.1.html#options");
@@ -527,7 +527,7 @@ void CMakeBuildSettingsWidget::batchEditConfiguration()
        "To set or change a variable, use -D&lt;variable&gt;:&lt;type&gt;=&lt;value&gt;.<br/>"
        "&lt;type&gt; can have one of the following values: FILEPATH, PATH, BOOL, INTERNAL, or STRING.<br/>"
                       "To unset a variable, use -U&lt;variable&gt;.<br/>"));
-    connect(label, &QLabel::linkActivated, this, [this](const QString &link) {
+    connect(label, &QLabel::linkActivated, this, [this](const QString &) {
         const CMakeTool *tool = CMakeKitAspect::cmakeTool(m_buildConfiguration->target()->kit());
         CMakeTool::openCMakeHelpUrl(tool, "%1/manual/cmake-variables.7.html");
     });
diff --git a/src/plugins/cmakeprojectmanager/cmakekitinformation.cpp b/src/plugins/cmakeprojectmanager/cmakekitinformation.cpp
index bc43f8be3ca..5b677533ebb 100644
--- a/src/plugins/cmakeprojectmanager/cmakekitinformation.cpp
+++ b/src/plugins/cmakeprojectmanager/cmakekitinformation.cpp
@@ -353,7 +353,7 @@ public:
           m_changeButton(createSubWidget<QPushButton>())
     {
         const CMakeTool *tool = CMakeKitAspect::cmakeTool(kit);
-        connect(this, &KitAspectWidget::labelLinkActivated, this, [=](const QString &link) {
+        connect(this, &KitAspectWidget::labelLinkActivated, this, [=](const QString &) {
             CMakeTool::openCMakeHelpUrl(tool, "%1/manual/cmake-generators.7.html");
         });
 
@@ -972,7 +972,7 @@ private:
                                 "To set a variable, use -D&lt;variable&gt;:&lt;type&gt;=&lt;value&gt;.<br/>"
                                 "&lt;type&gt; can have one of the following values: FILEPATH, PATH, "
                                 "BOOL, INTERNAL, or STRING."));
-        connect(editorLabel, &QLabel::linkActivated, this, [=](const QString &link) {
+        connect(editorLabel, &QLabel::linkActivated, this, [=](const QString &) {
             CMakeTool::openCMakeHelpUrl(tool, "%1/manual/cmake-variables.7.html");
         });
         m_editor->setMinimumSize(800, 200);
@@ -984,7 +984,7 @@ private:
         m_additionalEditor = new QLineEdit;
         auto additionalLabel = new QLabel(m_dialog);
         additionalLabel->setText(tr("Additional CMake <a href=\"options\">options</a>:"));
-        connect(additionalLabel, &QLabel::linkActivated, this, [=](const QString &link) {
+        connect(additionalLabel, &QLabel::linkActivated, this, [=](const QString &) {
             CMakeTool::openCMakeHelpUrl(tool, "%1/manual/cmake.1.html#options");
         });
 
diff --git a/src/plugins/docker/dockerdevice.cpp b/src/plugins/docker/dockerdevice.cpp
index 4cff9e89a84..68f4c92ac09 100644
--- a/src/plugins/docker/dockerdevice.cpp
+++ b/src/plugins/docker/dockerdevice.cpp
@@ -1026,6 +1026,7 @@ FilePath DockerDevice::mapToLocalAccess(const FilePath &filePath) const
     return FilePath::fromString(d->m_mergedDir + '/' + path);
 #else
     QTC_CHECK(false);
+    Q_UNUSED(filePath)
     return {};
 #endif
 }
@@ -1043,6 +1044,7 @@ FilePath DockerDevice::mapFromLocalAccess(const QString &filePath) const
     QTC_ASSERT(filePath.startsWith(d->m_mergedDir), return FilePath::fromString(filePath));
     return mapToGlobalPath(FilePath::fromString(filePath.mid(d->m_mergedDir.size())));
 #else
+    Q_UNUSED(filePath)
     QTC_CHECK(false);
     return {};
 #endif
diff --git a/src/plugins/qmldesigner/components/itemlibrary/itemlibrarywidget.cpp b/src/plugins/qmldesigner/components/itemlibrary/itemlibrarywidget.cpp
index edca09720fd..649ee343f8a 100644
--- a/src/plugins/qmldesigner/components/itemlibrary/itemlibrarywidget.cpp
+++ b/src/plugins/qmldesigner/components/itemlibrary/itemlibrarywidget.cpp
@@ -161,6 +161,8 @@ ItemLibraryWidget::ItemLibraryWidget(AsynchronousImageCache &imageCache,
     , m_itemsWidget(new QQuickWidget(this))
     , m_imageCache{imageCache}
 {
+    Q_UNUSED(asynchronousFontImageCache)
+
     m_compressionTimer.setInterval(200);
     m_compressionTimer.setSingleShot(true);
     ItemLibraryModel::registerQmlTypes();
diff --git a/src/plugins/qmldesigner/designercore/model/rewriterview.cpp b/src/plugins/qmldesigner/designercore/model/rewriterview.cpp
index a988fe26a30..19f37907b23 100644
--- a/src/plugins/qmldesigner/designercore/model/rewriterview.cpp
+++ b/src/plugins/qmldesigner/designercore/model/rewriterview.cpp
@@ -865,7 +865,7 @@ ModelNode RewriterView::nodeAtTextCursorPositionHelper(const ModelNode &root, in
     for (const myPair &pair : data) {
         ModelNode node = pair.first;
         i++;
-        if (i >= data.size()) {
+        if (i >= int(data.size())) {
             lastNode = node;
             break;
         }
diff --git a/src/plugins/studiowelcome/recentpresets.cpp b/src/plugins/studiowelcome/recentpresets.cpp
index f7ea5b9d614..f6e1335b479 100644
--- a/src/plugins/studiowelcome/recentpresets.cpp
+++ b/src/plugins/studiowelcome/recentpresets.cpp
@@ -58,7 +58,7 @@ QStringList RecentPresetsStore::addRecentToExisting(const RecentPreset &preset,
     Utils::erase_one(recents, preset);
     Utils::prepend(recents, preset);
 
-    if (recents.size() > m_max)
+    if (int(recents.size()) > m_max)
         recents.pop_back();
 
     return encodeRecentPresets(recents);