diff --git a/GUI/Model/Sim/InstrumentItems.cpp b/GUI/Model/Sim/InstrumentItems.cpp
index 6e42a68a4d714ef4227d773f6416b0496356922b..a71ad11072bf487b51dddedfddf4df9ddb73cbee 100644
--- a/GUI/Model/Sim/InstrumentItems.cpp
+++ b/GUI/Model/Sim/InstrumentItems.cpp
@@ -507,7 +507,6 @@ void SpecularInstrumentItem::writeTo(QXmlStreamWriter* w) const
 {
     XML::writeAttribute(w, XML::Attrib::version, uint(1));
     XML::writeBaseElement<ScanningInstrumentItem>(w, XML::Tag::BaseData, this);
-    w->writeEndElement();
 }
 
 void SpecularInstrumentItem::readFrom(QXmlStreamReader* r)