diff --git a/src/mainbase.cpp b/src/mainbase.cpp
--- a/src/mainbase.cpp
+++ b/src/mainbase.cpp
@@ -52,7 +52,7 @@ xmlNode *MainBase::XMLViewportTree(QTran
   return xmlviewport;
 }
 
-xmlNode *MainBase::XMLSettingsTree(void) const {
+xmlNode *MainBase::XMLSettingsTree(void) {
 
   xmlNode *xmlsettings = xmlNewNode(NULL, BAD_CAST "settings");
   {