diff --git a/sources/qetgraphicsitem/element.h b/sources/qetgraphicsitem/element.h
index 16ccbabf5..6757dc039 100644
--- a/sources/qetgraphicsitem/element.h
+++ b/sources/qetgraphicsitem/element.h
@@ -108,7 +108,13 @@ class Element : public QetGraphicsItem {
 	virtual void linkToElement(Element *) {}
 	virtual void unlinkAllElements() {}
 	virtual void unlinkElement(Element *) {}
+
+#if QT_VERSION >= 0x040800
 	virtual void initLink(QETProject *);
+#else
+	void initLink(QETProject *);
+#endif
+
 	QList<Element *> linkedElements ();
 	virtual int linkType() const {return link_type_;} // @return the linkable type
 	void newUuid() {uuid_ = QUuid::createUuid();} 	//create new uuid for this element
diff --git a/sources/qetproject.cpp b/sources/qetproject.cpp
index 28f250610..9e2e68ed1 100644
--- a/sources/qetproject.cpp
+++ b/sources/qetproject.cpp
@@ -458,7 +458,11 @@ void QETProject::setDefaultXRefProperties(const QString type, const XRefProperti
 }
 
 void QETProject::setDefaultXRefProperties(QHash<QString, XRefProperties> hash) {
+#if QT_VERSION >= 0x040800
+	m_default_xref_properties.swap(hash);
+#else
 	m_default_xref_properties = hash;
+#endif
 	emit XRefPropertiesChanged();
 }