diff --git a/src/plugins/platforms/wayland/qwaylandwindow.cpp b/src/plugins/platforms/wayland/qwaylandwindow.cpp
index 6d50b0d72de..a39ff99181b 100644
--- a/src/plugins/platforms/wayland/qwaylandwindow.cpp
+++ b/src/plugins/platforms/wayland/qwaylandwindow.cpp
@@ -601,6 +601,7 @@ const wl_callback_listener QWaylandWindow::callbackListener = {
 void QWaylandWindow::frameCallback(void *data, struct wl_callback *callback, uint32_t time)
 {
     Q_UNUSED(time);
+    Q_UNUSED(callback);
     QWaylandWindow *self = static_cast<QWaylandWindow*>(data);
 
     self->mWaitingForFrameSync = false;
diff --git a/tests/auto/wayland/client/mockinput.cpp b/tests/auto/wayland/client/mockinput.cpp
index 6bc27f1095e..9e568921044 100644
--- a/tests/auto/wayland/client/mockinput.cpp
+++ b/tests/auto/wayland/client/mockinput.cpp
@@ -194,6 +194,7 @@ void Compositor::sendDataDeviceLeave(void *data, const QList<QVariant> &paramete
 
 void Compositor::waitForStartDrag(void *data, const QList<QVariant> &parameters)
 {
+    Q_UNUSED(parameters);
     Compositor *compositor = static_cast<Compositor *>(data);
     Q_ASSERT(compositor);
     while (!compositor->m_startDragSeen) {
@@ -443,6 +444,11 @@ DataDevice::~DataDevice()
 
 void DataDevice::data_device_start_drag(QtWaylandServer::wl_data_device::Resource *resource, wl_resource *source, wl_resource *origin, wl_resource *icon, uint32_t serial)
 {
+    Q_UNUSED(resource);
+    Q_UNUSED(source);
+    Q_UNUSED(origin);
+    Q_UNUSED(icon);
+    Q_UNUSED(serial);
     m_compositor->m_startDragSeen = true;
 }
 
@@ -465,6 +471,7 @@ DataDevice *DataDeviceManager::dataDevice() const
 
 void DataDeviceManager::data_device_manager_get_data_device(Resource *resource, uint32_t id, struct ::wl_resource *seat)
 {
+    Q_UNUSED(seat);
     if (!m_data_device)
         m_data_device.reset(new DataDevice(m_compositor));
     m_data_device->add(resource->client(), id, 1);
diff --git a/tests/auto/wayland/client/tst_client.cpp b/tests/auto/wayland/client/tst_client.cpp
index 8acddfbe740..0a3c7bef755 100644
--- a/tests/auto/wayland/client/tst_client.cpp
+++ b/tests/auto/wayland/client/tst_client.cpp
@@ -93,6 +93,7 @@ public:
 
     void touchEvent(QTouchEvent *event) override
     {
+        Q_UNUSED(event);
         ++touchEventCount;
     }
 
@@ -272,6 +273,7 @@ public:
 protected:
     void mousePressEvent(QMouseEvent *event) override
     {
+        Q_UNUSED(event);
         if (dragStarted)
             return;
         dragStarted = true;