diff --git a/src/newgrf_gui.cpp b/src/newgrf_gui.cpp
--- a/src/newgrf_gui.cpp
+++ b/src/newgrf_gui.cpp
@@ -460,9 +460,7 @@ struct NewGRFParametersWindow : public W
 
 	virtual void OnResize()
 	{
-		NWidgetCore *nwi = this->GetWidget<NWidgetCore>(WID_NP_BACKGROUND);
 		this->vscroll->SetCapacityFromWidget(this, WID_NP_BACKGROUND);
-		nwi->widget_data = (this->vscroll->GetCapacity() << MAT_ROW_START) + (1 << MAT_COL_START);
 	}
 
 	/**
@@ -512,7 +510,7 @@ static const NWidgetPart _nested_newgrf_
 		EndContainer(),
 	EndContainer(),
 	NWidget(NWID_HORIZONTAL),
-		NWidget(WWT_MATRIX, COLOUR_MAUVE, WID_NP_BACKGROUND), SetMinimalSize(188, 182), SetResize(1, 1), SetFill(1, 0), SetMatrixDataTip(1, 5, STR_NULL), SetScrollbar(WID_NP_SCROLLBAR),
+		NWidget(WWT_MATRIX, COLOUR_MAUVE, WID_NP_BACKGROUND), SetMinimalSize(188, 182), SetResize(1, 1), SetFill(1, 0), SetMatrixDataTip(1, 0, STR_NULL), SetScrollbar(WID_NP_SCROLLBAR),
 		NWidget(NWID_VSCROLLBAR, COLOUR_MAUVE, WID_NP_SCROLLBAR),
 	EndContainer(),
 	NWidget(NWID_SELECTION, INVALID_COLOUR, WID_NP_SHOW_DESCRIPTION),