diff --git a/kcmkwin/kwintabbox/layoutpreview.h b/kcmkwin/kwintabbox/layoutpreview.h
--- a/kcmkwin/kwintabbox/layoutpreview.h
+++ b/kcmkwin/kwintabbox/layoutpreview.h
@@ -54,6 +54,7 @@
 
     virtual QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;
     virtual int rowCount(const QModelIndex &parent = QModelIndex()) const;
+    virtual QHash<int, QByteArray> roleNames() const;
     Q_INVOKABLE QString longestCaption() const;
 
 private:
diff --git a/kcmkwin/kwintabbox/layoutpreview.cpp b/kcmkwin/kwintabbox/layoutpreview.cpp
--- a/kcmkwin/kwintabbox/layoutpreview.cpp
+++ b/kcmkwin/kwintabbox/layoutpreview.cpp
@@ -116,13 +116,6 @@
 ExampleClientModel::ExampleClientModel (QObject* parent)
     : QAbstractListModel (parent)
 {
-    QHash<int, QByteArray> roles;
-    roles[Qt::UserRole] = "caption";
-    roles[Qt::UserRole+1] = "minimized";
-    roles[Qt::UserRole + 3] = "icon";
-    roles[Qt::UserRole+2] = "desktopName";
-    roles[Qt::UserRole+4] = "windowId";
-    setRoleNames(roles);
     init();
 }
 
@@ -199,6 +192,18 @@
     return m_services.size();
 }
 
+QHash<int, QByteArray> ExampleClientModel::roleNames() const
+{
+    // FIXME: Use an enum.
+    return {
+        { Qt::UserRole, QByteArrayLiteral("caption") },
+        { Qt::UserRole + 1, QByteArrayLiteral("minimized") },
+        { Qt::UserRole + 2, QByteArrayLiteral("desktopName") },
+        { Qt::UserRole + 3, QByteArrayLiteral("icon") },
+        { Qt::UserRole + 4, QByteArrayLiteral("windowId") },
+    };
+}
+
 SwitcherItem::SwitcherItem(QObject *parent)
     : QObject(parent)
     , m_model(new ExampleClientModel(this))
diff --git a/scripting/scripting_model.h b/scripting/scripting_model.h
--- a/scripting/scripting_model.h
+++ b/scripting/scripting_model.h
@@ -74,6 +74,7 @@
     virtual QModelIndex index(int row, int column, const QModelIndex &parent = QModelIndex()) const;
     virtual QModelIndex parent(const QModelIndex &child) const;
     virtual int rowCount(const QModelIndex &parent = QModelIndex()) const;
+    virtual QHash<int, QByteArray> roleNames() const;
 
     void setExclusions(ClientModel::Exclusions exclusions);
     Exclusions exclusions() const;
diff --git a/scripting/scripting_model.cpp b/scripting/scripting_model.cpp
--- a/scripting/scripting_model.cpp
+++ b/scripting/scripting_model.cpp
@@ -655,13 +655,6 @@
     , m_root(nullptr)
     , m_exclusions(NoExclusion)
 {
-    QHash<int, QByteArray> roleNames;
-    roleNames.insert(Qt::DisplayRole, "display");
-    roleNames.insert(ClientRole, "client");
-    roleNames.insert(ScreenRole, "screen");
-    roleNames.insert(DesktopRole, "desktop");
-    roleNames.insert(ActivityRole, "activity");
-    setRoleNames(roleNames);
 }
 
 ClientModel::~ClientModel()
@@ -741,6 +734,17 @@
     return 0;
 }
 
+QHash<int, QByteArray> ClientModel::roleNames() const
+{
+    return {
+        { Qt::DisplayRole, QByteArrayLiteral("display") },
+        { ClientRole, QByteArrayLiteral("client") },
+        { ScreenRole, QByteArrayLiteral("screen") },
+        { DesktopRole, QByteArrayLiteral("desktop") },
+        { ActivityRole, QByteArrayLiteral("activity") },
+    };
+}
+
 QModelIndex ClientModel::parent(const QModelIndex &child) const
 {
     if (!child.isValid() || child.column() != 0) {
diff --git a/tabbox/clientmodel.h b/tabbox/clientmodel.h
--- a/tabbox/clientmodel.h
+++ b/tabbox/clientmodel.h
@@ -64,6 +64,7 @@
     virtual int rowCount(const QModelIndex& parent = QModelIndex()) const;
     virtual QModelIndex parent(const QModelIndex& child) const;
     virtual QModelIndex index(int row, int column, const QModelIndex& parent = QModelIndex()) const;
+    virtual QHash<int, QByteArray> roleNames() const;
     Q_INVOKABLE QString longestCaption() const;
 
     /**
diff --git a/tabbox/clientmodel.cpp b/tabbox/clientmodel.cpp
--- a/tabbox/clientmodel.cpp
+++ b/tabbox/clientmodel.cpp
@@ -39,14 +39,6 @@
 ClientModel::ClientModel(QObject* parent)
     : QAbstractItemModel(parent)
 {
-    QHash<int, QByteArray> roles;
-    roles[CaptionRole] = "caption";
-    roles[DesktopNameRole] = "desktopName";
-    roles[MinimizedRole] = "minimized";
-    roles[WIdRole] = "windowId";
-    roles[CloseableRole] = "closeable";
-    roles[IconRole] = "icon";
-    setRoleNames(roles);
 }
 
 ClientModel::~ClientModel()
@@ -143,6 +135,18 @@
     return createIndex(row, 0);
 }
 
+QHash<int, QByteArray> ClientModel::roleNames() const
+{
+    return {
+        { CaptionRole, QByteArrayLiteral("caption") },
+        { DesktopNameRole, QByteArrayLiteral("desktopName") },
+        { MinimizedRole, QByteArrayLiteral("minimized") },
+        { WIdRole, QByteArrayLiteral("windowId") },
+        { CloseableRole, QByteArrayLiteral("closeable") },
+        { IconRole, QByteArrayLiteral("icon") },
+    };
+}
+
 QModelIndex ClientModel::index(QWeakPointer<TabBoxClient> client) const
 {
     if (!m_clientList.contains(client))
diff --git a/tabbox/desktopmodel.h b/tabbox/desktopmodel.h
--- a/tabbox/desktopmodel.h
+++ b/tabbox/desktopmodel.h
@@ -59,6 +59,7 @@
     virtual int rowCount(const QModelIndex& parent = QModelIndex()) const;
     virtual QModelIndex parent(const QModelIndex& child) const;
     virtual QModelIndex index(int row, int column, const QModelIndex& parent = QModelIndex()) const;
+    virtual QHash<int, QByteArray> roleNames() const;
     Q_INVOKABLE QString longestCaption() const;
 
     /**
diff --git a/tabbox/desktopmodel.cpp b/tabbox/desktopmodel.cpp
--- a/tabbox/desktopmodel.cpp
+++ b/tabbox/desktopmodel.cpp
@@ -34,12 +34,6 @@
 DesktopModel::DesktopModel(QObject* parent)
     : QAbstractItemModel(parent)
 {
-    QHash<int, QByteArray> roleNames;
-    roleNames.insert(Qt::DisplayRole, "display");
-    roleNames.insert(DesktopNameRole, "caption");
-    roleNames.insert(DesktopRole, "desktop");
-    roleNames.insert(ClientModelRole, "client");
-    setRoleNames(roleNames);
 }
 
 DesktopModel::~DesktopModel()
@@ -140,6 +134,16 @@
     return createIndex(row, column);
 }
 
+QHash<int, QByteArray> DesktopModel::roleNames() const
+{
+    return {
+        { Qt::DisplayRole, QByteArrayLiteral("display") },
+        { DesktopNameRole, QByteArrayLiteral("caption") },
+        { DesktopRole, QByteArrayLiteral("desktop") },
+        { ClientModelRole, QByteArrayLiteral("client") },
+    };
+}
+
 QModelIndex DesktopModel::desktopIndex(int desktop) const
 {
     if (desktop > m_desktopList.count())