diff --git a/dataenginemanager.cpp b/dataenginemanager.cpp
index 804ead513..7eec703a2 100644
--- a/dataenginemanager.cpp
+++ b/dataenginemanager.cpp
@@ -25,22 +25,33 @@
 namespace Plasma
 {
 
+    class DataEngineManager::Private
+{
+    public:
+        Private()
+        {}
+
+        Plasma::DataEngine::Dict m_engines;
+
+};
+
 DataEngineManager::DataEngineManager()
+    : d(new Private())
 {
 }
 
 DataEngineManager::~DataEngineManager()
 {
-    foreach (Plasma::DataEngine* engine, m_engines) {
+    foreach (Plasma::DataEngine* engine, d->m_engines) {
         delete engine;
     }
-    m_engines.clear();
+    d->m_engines.clear();
 }
 
 Plasma::DataEngine* DataEngineManager::dataEngine(const QString& name) const
 {
-    Plasma::DataEngine::Dict::const_iterator it = m_engines.find(name);
-    if (it != m_engines.end()) {
+    Plasma::DataEngine::Dict::const_iterator it = d->m_engines.find(name);
+    if (it != d->m_engines.end()) {
         // ref and return the engine
         //Plasma::DataEngine *engine = *it;
         return *it;
@@ -78,7 +89,7 @@ Plasma::DataEngine* DataEngineManager::loadDataEngine(const QString& name)
     engine->ref();
     engine->setObjectName(offers.first()->name());
     engine->setIcon(offers.first()->icon());
-    m_engines[name] = engine;
+    d->m_engines[name] = engine;
     return engine;
 }
 
@@ -90,7 +101,7 @@ void DataEngineManager::unloadDataEngine(const QString& name)
         engine->deref();
 
         if (!engine->isUsed()) {
-            m_engines.remove(name);
+            d->m_engines.remove(name);
             delete engine;
         }
     }
diff --git a/dataenginemanager.h b/dataenginemanager.h
index ffd71184d..be3e0b87e 100644
--- a/dataenginemanager.h
+++ b/dataenginemanager.h
@@ -41,7 +41,8 @@ class PLASMA_EXPORT DataEngineManager
         QStringList knownEngines() const;
 
     private:
-        Plasma::DataEngine::Dict m_engines;
+        class Private;
+        Private* const d;
 };
 
 } // namespace Plasma
diff --git a/widgets/lineedit.cpp b/widgets/lineedit.cpp
index 74e9ef9ad..df55e6e64 100644
--- a/widgets/lineedit.cpp
+++ b/widgets/lineedit.cpp
@@ -23,8 +23,13 @@
 namespace Plasma
 {
 
+class LineEdit::Private
+{
+};
+
 LineEdit::LineEdit(QGraphicsItem *parent, QGraphicsScene *scene)
-    : QGraphicsTextItem(parent, scene)
+    : QGraphicsTextItem(parent, scene),
+      d(new Private())
 {
     setTextInteractionFlags(Qt::TextEditorInteraction);
 }
diff --git a/widgets/lineedit.h b/widgets/lineedit.h
index 82048699d..f469756fb 100644
--- a/widgets/lineedit.h
+++ b/widgets/lineedit.h
@@ -43,6 +43,10 @@ class KDE_EXPORT LineEdit : public QGraphicsTextItem
 
     public Q_SLOTS:
         void updated(const QString&, const Plasma::DataEngine::Data&);
+
+    private:
+        class Private;
+        Private* const d;
 };
 
 } // namespace Plasma