diff --git a/docs/latex/wx/comboctrl.tex b/docs/latex/wx/comboctrl.tex
index 07d9608518..22b4df0217 100644
--- a/docs/latex/wx/comboctrl.tex
+++ b/docs/latex/wx/comboctrl.tex
@@ -112,6 +112,7 @@ Here's how you would create and populate it in a dialog constructor:
 
     wxListViewComboPopup* popupCtrl = new wxListViewComboPopup();
 
+    // It is important to call SetPopupControl() as soon as possible
     comboCtrl->SetPopupControl(popupCtrl);
 
     // Populate using wxListView methods