diff --git a/autotests/integration/kwin_wayland_test.h b/autotests/integration/kwin_wayland_test.h
index d5c4861859..87a048f12c 100644
--- a/autotests/integration/kwin_wayland_test.h
+++ b/autotests/integration/kwin_wayland_test.h
@@ -679,8 +679,8 @@ void flushWaylandConnection();
 bool waylandSync();
 
 std::unique_ptr<KWayland::Client::Surface> createSurface();
-KWayland::Client::SubSurface *createSubSurface(KWayland::Client::Surface *surface,
-                                               KWayland::Client::Surface *parentSurface, QObject *parent = nullptr);
+std::unique_ptr<KWayland::Client::SubSurface> createSubSurface(KWayland::Client::Surface *surface,
+                                                               KWayland::Client::Surface *parentSurface);
 
 std::unique_ptr<LayerSurfaceV1> createLayerSurfaceV1(KWayland::Client::Surface *surface,
                                                      const QString &scope,
diff --git a/autotests/integration/test_helpers.cpp b/autotests/integration/test_helpers.cpp
index 8b27f3e080..3c598ca9df 100644
--- a/autotests/integration/test_helpers.cpp
+++ b/autotests/integration/test_helpers.cpp
@@ -905,14 +905,13 @@ std::unique_ptr<KWayland::Client::Surface> createSurface()
     return s->isValid() ? std::move(s) : nullptr;
 }
 
-KWayland::Client::SubSurface *createSubSurface(KWayland::Client::Surface *surface, KWayland::Client::Surface *parentSurface, QObject *parent)
+std::unique_ptr<KWayland::Client::SubSurface> createSubSurface(KWayland::Client::Surface *surface, KWayland::Client::Surface *parentSurface)
 {
     if (!s_waylandConnection.subCompositor) {
         return nullptr;
     }
-    auto s = s_waylandConnection.subCompositor->createSubSurface(surface, parentSurface, parent);
+    std::unique_ptr<KWayland::Client::SubSurface> s(s_waylandConnection.subCompositor->createSubSurface(surface, parentSurface));
     if (!s->isValid()) {
-        delete s;
         return nullptr;
     }
     return s;