diff --git a/src/rail_gui.cpp b/src/rail_gui.cpp
--- a/src/rail_gui.cpp
+++ b/src/rail_gui.cpp
@@ -1672,8 +1672,8 @@ static const NWidgetPart _nested_signal_
 				NWidget(WWT_LABEL, COLOUR_DARK_GREEN, BSW_DRAG_SIGNALS_DENSITY_LABEL), SetDataTip(STR_ORANGE_INT, STR_BUILD_SIGNAL_DRAG_SIGNALS_DENSITY_TOOLTIP), SetFill(true, true),
 				NWidget(NWID_HORIZONTAL), SetPIP(2, 0, 2),
 					NWidget(NWID_SPACER), SetFill(true, false),
-					NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, BSW_DRAG_SIGNALS_DENSITY_DECREASE), SetMinimalSize(9, 12), SetDataTip(SPR_ARROW_LEFT, STR_BUILD_SIGNAL_DRAG_SIGNALS_DENSITY_DECREASE_TOOLTIP),
-					NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, BSW_DRAG_SIGNALS_DENSITY_INCREASE), SetMinimalSize(9, 12), SetDataTip(SPR_ARROW_RIGHT, STR_BUILD_SIGNAL_DRAG_SIGNALS_DENSITY_INCREASE_TOOLTIP),
+					NWidget(NWID_BUTTON_ARROW, COLOUR_GREY, BSW_DRAG_SIGNALS_DENSITY_DECREASE), SetMinimalSize(9, 12), SetDataTip(AWV_DECREASE, STR_BUILD_SIGNAL_DRAG_SIGNALS_DENSITY_DECREASE_TOOLTIP),
+					NWidget(NWID_BUTTON_ARROW, COLOUR_GREY, BSW_DRAG_SIGNALS_DENSITY_INCREASE), SetMinimalSize(9, 12), SetDataTip(AWV_INCREASE, STR_BUILD_SIGNAL_DRAG_SIGNALS_DENSITY_INCREASE_TOOLTIP),
 					NWidget(NWID_SPACER), SetFill(true, false),
 				EndContainer(),
 				NWidget(NWID_SPACER), SetMinimalSize(0, 2), SetFill(true, false),