diff --git a/code/nel/include/nel/gui/group_scrolltext.h b/code/nel/include/nel/gui/group_scrolltext.h
index bee09a68d..7494121be 100644
--- a/code/nel/include/nel/gui/group_scrolltext.h
+++ b/code/nel/include/nel/gui/group_scrolltext.h
@@ -44,6 +44,7 @@ namespace NLGUI
 		~CGroupScrollText();
 
 		std::string getProperty( const std::string &name ) const;
+		void setProperty( const std::string &name, const std::string &value );
 
 		/// CInterfaceGroup Interface
 		virtual bool parse (xmlNodePtr cur, CInterfaceGroup *parentGroup);
diff --git a/code/nel/src/gui/group_scrolltext.cpp b/code/nel/src/gui/group_scrolltext.cpp
index 07cb445b4..42f2c26d2 100644
--- a/code/nel/src/gui/group_scrolltext.cpp
+++ b/code/nel/src/gui/group_scrolltext.cpp
@@ -57,6 +57,19 @@ namespace NLGUI
 			return CInterfaceGroup::getProperty( name );
 	}
 
+	void CGroupScrollText::setProperty( const std::string &name, const std::string &value )
+	{
+		if( name == "invert_scroll_bar" )
+		{
+			bool b;
+			if( NLMISC::fromString( value, b ) )
+				_InvertScrollBar = b;
+			return;
+		}
+		else
+			CInterfaceGroup::setProperty( name, value );
+	}
+
 	//========================================================================
 	bool CGroupScrollText::parse(xmlNodePtr cur,CInterfaceGroup *parentGroup)
 	{