diff --git a/PowerEditor/src/Parameters.cpp b/PowerEditor/src/Parameters.cpp
index ed43da77..89ae2066 100644
--- a/PowerEditor/src/Parameters.cpp
+++ b/PowerEditor/src/Parameters.cpp
@@ -5180,7 +5180,7 @@ void NppParameters::createXmlTreeFromGUIParams()
 
 	// <GUIConfig name="noUpdate" intervalDays="15" nextUpdateDate="20161022">no</GUIConfig>
 	{
-		TiXmlElement *element = insertGUIConfigBoolNode(newGUIRoot, TEXT("noUpdate"), _nppGUI._autoUpdateOpt._doAutoUpdate);
+		TiXmlElement *element = insertGUIConfigBoolNode(newGUIRoot, TEXT("noUpdate"), !_nppGUI._autoUpdateOpt._doAutoUpdate);
 		element->SetAttribute(TEXT("intervalDays"), _nppGUI._autoUpdateOpt._intervalDays);
 		element->SetAttribute(TEXT("nextUpdateDate"), _nppGUI._autoUpdateOpt._nextUpdateDate.toString().c_str());
 	}