diff --git a/src/server/xdgforeign_v2_interface.cpp b/src/server/xdgforeign_v2_interface.cpp
--- a/src/server/xdgforeign_v2_interface.cpp
+++ b/src/server/xdgforeign_v2_interface.cpp
@@ -95,6 +95,7 @@
 void XdgExporterUnstableV2Interface::Private::destroyCallback(wl_client *client, wl_resource *resource)
 {
     Q_UNUSED(client)
+    Q_UNUSED(resource)
 }
 
 void XdgExporterUnstableV2Interface::Private::exportCallback(wl_client *client, wl_resource *resource, uint32_t id, wl_resource * surface)
@@ -237,6 +238,7 @@
 void XdgImporterUnstableV2Interface::Private::destroyCallback(wl_client *client, wl_resource *resource)
 {
     Q_UNUSED(client)
+    Q_UNUSED(resource)
 }
 
 void XdgImporterUnstableV2Interface::Private::importCallback(wl_client *client, wl_resource *resource, uint32_t id, const char *h)
@@ -438,6 +440,8 @@
 
 void XdgImportedUnstableV2Interface::Private::setParentOfCallback(wl_client *client, wl_resource *resource, wl_resource * surface)
 {
+    Q_UNUSED(client)
+
     auto s = cast<Private>(resource);
     SurfaceInterface *surf = SurfaceInterface::get(surface);
 
diff --git a/src/server/xdgoutput_interface.cpp b/src/server/xdgoutput_interface.cpp
--- a/src/server/xdgoutput_interface.cpp
+++ b/src/server/xdgoutput_interface.cpp
@@ -86,7 +86,7 @@
 
 
 XdgOutputManagerInterface::XdgOutputManagerInterface(Display *display, QObject *parent)
-    : Global(new XdgOutputManagerInterface::Private(this, display))
+    : Global(new XdgOutputManagerInterface::Private(this, display), parent)
 {
 }