diff --git a/src/comment.cpp b/src/comment.cpp
--- a/src/comment.cpp
+++ b/src/comment.cpp
@@ -156,7 +156,7 @@
 
 void Comment::setChildren(QList<Comment> children)
 {
-    d->m_children = children;
+    d->m_children = std::move(children); // TODO KF6 Make QList const & and remove the std::move
 }
 
 QList<Comment> Comment::children() const
diff --git a/src/content.cpp b/src/content.cpp
--- a/src/content.cpp
+++ b/src/content.cpp
@@ -317,7 +317,7 @@
 
 void Attica::Content::setIcons(QList<Icon> icons)
 {
-    d->m_icons = icons;
+    d->m_icons = std::move(icons); // TODO KF6 Make QList const & and remove the std::move
 }
 
 QList<QUrl> Attica::Content::videos()
@@ -327,7 +327,7 @@
 
 void Attica::Content::setVideos(QList<QUrl> videos)
 {
-    d->m_videos = videos;
+    d->m_videos = std::move(videos);
 }
 
 QStringList Attica::Content::tags() const
diff --git a/src/forum.cpp b/src/forum.cpp
--- a/src/forum.cpp
+++ b/src/forum.cpp
@@ -126,7 +126,7 @@
 
 void Forum::setChildren(QList<Forum> children)
 {
-    d->m_children = children;
+    d->m_children = std::move(children); // TODO KF6 Make QList const & and remove the std::move
 }
 
 QList<Forum> Forum::children() const
diff --git a/src/knowledgebaseentry.cpp b/src/knowledgebaseentry.cpp
--- a/src/knowledgebaseentry.cpp
+++ b/src/knowledgebaseentry.cpp
@@ -72,7 +72,7 @@
 
 void KnowledgeBaseEntry::setId(QString id)
 {
-    d->m_id = id;
+    d->m_id = std::move(id); // TODO KF6 Make QString const & and remove the std::move
 }
 
 QString KnowledgeBaseEntry::id() const