diff --git a/src/common/davcollection.h b/src/common/davcollection.h
--- a/src/common/davcollection.h
+++ b/src/common/davcollection.h
@@ -23,10 +23,9 @@
 
 #include "enums.h"
 
-#include <memory>
-
-#include <QVector>
+#include <QSharedDataPointer>
 #include <QString>
+#include <QVector>
 
 class QColor;
 
@@ -146,7 +145,7 @@
     Q_REQUIRED_RESULT Privileges privileges() const;
 
 private:
-    std::unique_ptr<DavCollectionPrivate> d;
+    QSharedDataPointer<DavCollectionPrivate> d;
 };
 }
 
diff --git a/src/common/davcollection.cpp b/src/common/davcollection.cpp
--- a/src/common/davcollection.cpp
+++ b/src/common/davcollection.cpp
@@ -24,58 +24,34 @@
 
 using namespace KDAV;
 
-class DavCollectionPrivate
+class DavCollectionPrivate : public QSharedData
 {
 public:
-    void fillFrom(const DavCollectionPrivate &other);
-
+    DavCollection::ContentTypes mContentTypes;
     QString mCTag;
     DavUrl mUrl;
     QString mDisplayName;
     QColor mColor;
-    DavCollection::ContentTypes mContentTypes;
     Privileges mPrivileges;
 };
 
-void DavCollectionPrivate::fillFrom(const DavCollectionPrivate &other)
-{
-    mCTag = other.mCTag;
-    mUrl = other.mUrl;
-    mDisplayName = other.mDisplayName;
-    mColor = other.mColor;
-    mContentTypes = other.mContentTypes;
-    mPrivileges = other.mPrivileges;
-}
-
 DavCollection::DavCollection()
-    : d(std::unique_ptr<DavCollectionPrivate>(new DavCollectionPrivate))
+    : d(new DavCollectionPrivate)
 {
 }
 
 DavCollection::DavCollection(const DavUrl &url, const QString &displayName, ContentTypes contentTypes)
-    : d(std::unique_ptr<DavCollectionPrivate>(new DavCollectionPrivate))
+    : d(new DavCollectionPrivate)
 {
     d->mUrl = url;
     d->mDisplayName = displayName;
     d->mContentTypes = contentTypes;
     d->mPrivileges = KDAV::All;
 }
 
-DavCollection::DavCollection(const DavCollection &other)
-    : d(std::unique_ptr<DavCollectionPrivate>(new DavCollectionPrivate))
-{
-    d->fillFrom(*other.d.get());
-}
-
-DavCollection &DavCollection::operator=(const DavCollection &other)
-{
-    d->fillFrom(*other.d.get());
-    return *this;
-}
-
-DavCollection::~DavCollection()
-{
-}
+DavCollection::DavCollection(const DavCollection &other) = default;
+DavCollection &DavCollection::operator=(const DavCollection &other) = default;
+DavCollection::~DavCollection() = default;
 
 void DavCollection::setCTag(const QString &ctag)
 {
diff --git a/src/common/davitem.h b/src/common/davitem.h
--- a/src/common/davitem.h
+++ b/src/common/davitem.h
@@ -21,10 +21,9 @@
 
 #include "kpimkdav_export.h"
 
-#include <memory>
-
 #include <QByteArray>
 #include <QDataStream>
+#include <QSharedDataPointer>
 #include <QString>
 #include <QVector>
 
@@ -113,7 +112,7 @@
     Q_REQUIRED_RESULT QString etag() const;
 
 private:
-    std::unique_ptr<DavItemPrivate> d;
+    QSharedDataPointer<DavItemPrivate> d;
 };
 
 KPIMKDAV_EXPORT QDataStream &operator<<(QDataStream &out, const DavItem &item);
diff --git a/src/common/davitem.cpp b/src/common/davitem.cpp
--- a/src/common/davitem.cpp
+++ b/src/common/davitem.cpp
@@ -22,54 +22,32 @@
 
 using namespace KDAV;
 
-class DavItemPrivate
+class DavItemPrivate : public QSharedData
 {
 public:
-    void fillFrom(const DavItemPrivate &other);
-
     DavUrl mUrl;
     QString mContentType;
     QByteArray mData;
     QString mEtag;
 };
 
-void DavItemPrivate::fillFrom(const DavItemPrivate &other)
-{
-    mUrl = other.mUrl;
-    mContentType = other.mContentType;
-    mData = other.mData;
-    mEtag = other.mEtag;
-}
-
 DavItem::DavItem()
-    : d(std::unique_ptr<DavItemPrivate>(new DavItemPrivate))
+    : d(new DavItemPrivate)
 {
 }
 
 DavItem::DavItem(const DavUrl &url, const QString &contentType, const QByteArray &data, const QString &etag)
-    : d(std::unique_ptr<DavItemPrivate>(new DavItemPrivate))
+    : d(new DavItemPrivate)
 {
     d->mUrl = url;
     d->mContentType = contentType;
     d->mData = data;
     d->mEtag = etag;
 }
 
-DavItem::DavItem(const DavItem &other)
-    : d(std::unique_ptr<DavItemPrivate>(new DavItemPrivate))
-{
-    d->fillFrom(*other.d.get());
-}
-
-DavItem &DavItem::operator=(const DavItem &other)
-{
-    d->fillFrom(*other.d.get());
-    return *this;
-}
-
-DavItem::~DavItem()
-{
-}
+DavItem::DavItem(const DavItem &other) = default;
+DavItem &DavItem::operator=(const DavItem &other) = default;
+DavItem::~DavItem() = default;
 
 void DavItem::setUrl(const DavUrl &url)
 {