diff --git a/src/timetable_gui.cpp b/src/timetable_gui.cpp
--- a/src/timetable_gui.cpp
+++ b/src/timetable_gui.cpp
@@ -200,7 +200,7 @@ struct TimetableWindow : Window {
 	{
 		switch (widget) {
 			case WID_VT_ARRIVAL_DEPARTURE_PANEL:
-				SetDParam(0, MAX_YEAR * DAYS_IN_YEAR);
+				SetDParamMaxValue(0, MAX_YEAR * DAYS_IN_YEAR);
 				this->deparr_time_width = GetStringBoundingBox(STR_JUST_DATE_TINY).width;
 				this->deparr_abbr_width = max(GetStringBoundingBox(STR_TIMETABLE_ARRIVAL_ABBREVIATION).width, GetStringBoundingBox(STR_TIMETABLE_DEPARTURE_ABBREVIATION).width);
 				size->width = WD_FRAMERECT_LEFT + this->deparr_abbr_width + 10 + this->deparr_time_width + WD_FRAMERECT_RIGHT;
@@ -368,7 +368,7 @@ struct TimetableWindow : Window {
 				bool final_order = false;
 
 				bool rtl = _current_text_dir == TD_RTL;
-				SetDParam(0, 99);
+				SetDParamMaxValue(0, v->GetNumOrders(), 2);
 				int index_column_width = GetStringBoundingBox(STR_ORDER_INDEX).width + 2 * GetSpriteSize(rtl ? SPR_ARROW_RIGHT : SPR_ARROW_LEFT).width + 3;
 				int middle = rtl ? r.right - WD_FRAMERECT_RIGHT - index_column_width : r.left + WD_FRAMERECT_LEFT + index_column_width;