diff --git a/kcmkwin/kwindecoration/declarative-plugin/previewbridge.cpp b/kcmkwin/kwindecoration/declarative-plugin/previewbridge.cpp
--- a/kcmkwin/kwindecoration/declarative-plugin/previewbridge.cpp
+++ b/kcmkwin/kwindecoration/declarative-plugin/previewbridge.cpp
@@ -60,7 +60,7 @@
 {
     auto ptr = std::unique_ptr<PreviewClient>(new PreviewClient(client, decoration));
     m_lastCreatedClient = ptr.get();
-    return std::move(ptr);
+    return ptr;
 }
 
 void PreviewBridge::update(Decoration *decoration, const QRect &geometry)
@@ -78,7 +78,7 @@
 {
     auto ptr = std::unique_ptr<PreviewSettings>(new PreviewSettings(parent));
     m_lastCreatedSettings = ptr.get();
-    return std::move(ptr);
+    return ptr;
 }
 
 void PreviewBridge::registerPreviewItem(PreviewItem *item)