diff --git a/docbook/users-guide/WritingGUI.xml b/docbook/users-guide/WritingGUI.xml
index 18dacf22b7a7cf089aa2b83352e87e737fce5656..67b4c5ff226b4478b41c35a3f817401107583996 100644
--- a/docbook/users-guide/WritingGUI.xml
+++ b/docbook/users-guide/WritingGUI.xml
@@ -129,8 +129,6 @@ MyMainFrame::MyMainFrame(const TGWindow *p,UInt_t w,UInt_t h) {
 void MyMainFrame::DoDraw() {
    <emphasis role="italic">// Draws function graphics in randomly choosen interval</emphasis>
    TF1 *f1 = new TF1("f1","sin(x)/x",0,gRandom-&gt;Rndm()*10);
-   f1-&gt;SetFillColor(19);
-   f1-&gt;SetFillStyle(1);
    f1-&gt;SetLineWidth(3);
    f1-&gt;Draw();
    TCanvas *fCanvas = fEcanvas-&gt;GetCanvas();