diff --git a/src/object_gui.cpp b/src/object_gui.cpp
index 500af3c0c0..48dea3453d 100644
--- a/src/object_gui.cpp
+++ b/src/object_gui.cpp
@@ -661,6 +661,7 @@ static const NWidgetPart _nested_build_object_widgets[] = {
 		NWidget(WWT_CAPTION, COLOUR_DARK_GREEN), SetDataTip(STR_OBJECT_BUILD_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
 		NWidget(WWT_SHADEBOX, COLOUR_DARK_GREEN),
 		NWidget(WWT_DEFSIZEBOX, COLOUR_DARK_GREEN),
+		NWidget(WWT_STICKYBOX, COLOUR_DARK_GREEN),
 	EndContainer(),
 	NWidget(WWT_PANEL, COLOUR_DARK_GREEN),
 		NWidget(NWID_HORIZONTAL), SetPadding(2, 0, 0, 2),