diff --git a/samples/widgets/combobox.cpp b/samples/widgets/combobox.cpp
index d3e19731fc..ab9947173b 100644
--- a/samples/widgets/combobox.cpp
+++ b/samples/widgets/combobox.cpp
@@ -431,7 +431,7 @@ void ComboboxWidgetsPage::CreateCombo()
             break;
 
         case ComboKind_DropDown:
-            flags = wxCB_DROPDOWN;
+            flags |= wxCB_DROPDOWN;
             break;
     }