diff --git a/src/gui/dialogs/preferences_dialog.cpp b/src/gui/dialogs/preferences_dialog.cpp
index fd674652197c..1f85a7ca3780 100644
--- a/src/gui/dialogs/preferences_dialog.cpp
+++ b/src/gui/dialogs/preferences_dialog.cpp
@@ -836,10 +836,10 @@ void tpreferences::on_advanced_prefs_list_select(tlistbox& list, twindow& window
 	if(selected_type == ADVANCED_PREF_TYPE::SPECIAL) {
 		if (selected_field == "advanced_graphic_options") {
 			gui2::tadvanced_graphics_options::display(window.video());
-		}
-
-		if (selected_field == "orb_color") {
+		} else if (selected_field == "orb_color") {
 			gui2::tselect_orb_colors::display(window.video());
+		} else {
+			DBG_GUI_L << "Invalid or unimplemented custom advanced prefs option: " << selected_field << "\n";
 		}
 
 		// Add more options here as needed