diff --git a/qt4/src/poppler-optcontent.cc b/qt4/src/poppler-optcontent.cc
index 6a5ffe7..b9ceb7e 100644
--- a/qt4/src/poppler-optcontent.cc
+++ b/qt4/src/poppler-optcontent.cc
@@ -172,7 +172,7 @@
       while ( i.hasNext() ) {
 	i.next();
 	qDebug() << "iterator" << i.key() << ":" << i.value();
-	addChild( i.value(), m_rootNode );
+	addChild( m_rootNode, i.value() );
       }
     } else {
       parseOrderArray( m_rootNode, optContent->getOrderArray() );
diff --git a/qt5/src/poppler-optcontent.cc b/qt5/src/poppler-optcontent.cc
index 5af37c8..94df59e 100644
--- a/qt5/src/poppler-optcontent.cc
+++ b/qt5/src/poppler-optcontent.cc
@@ -172,7 +172,7 @@
       while ( i.hasNext() ) {
 	i.next();
 	qDebug() << "iterator" << i.key() << ":" << i.value();
-	addChild( i.value(), m_rootNode );
+	addChild( m_rootNode, i.value() );
       }
     } else {
       parseOrderArray( m_rootNode, optContent->getOrderArray() );