diff --git a/src/industry_gui.cpp b/src/industry_gui.cpp
--- a/src/industry_gui.cpp
+++ b/src/industry_gui.cpp
@@ -170,6 +170,7 @@ static const NWidgetPart _nested_build_i
 		NWidget(WWT_CLOSEBOX, COLOUR_DARK_GREEN),
 		NWidget(WWT_CAPTION, COLOUR_DARK_GREEN), SetDataTip(STR_FUND_INDUSTRY_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(NWID_HORIZONTAL),
@@ -1000,6 +1001,7 @@ static const NWidgetPart _nested_industr
 		NWidget(WWT_CAPTION, COLOUR_CREAM, WID_IV_CAPTION), SetDataTip(STR_INDUSTRY_VIEW_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
 		NWidget(WWT_DEBUGBOX, COLOUR_CREAM),
 		NWidget(WWT_SHADEBOX, COLOUR_CREAM),
+		NWidget(WWT_DEFSIZEBOX, COLOUR_CREAM),
 		NWidget(WWT_STICKYBOX, COLOUR_CREAM),
 	EndContainer(),
 	NWidget(WWT_PANEL, COLOUR_CREAM),
@@ -1035,6 +1037,7 @@ static const NWidgetPart _nested_industr
 		NWidget(WWT_CLOSEBOX, COLOUR_BROWN),
 		NWidget(WWT_CAPTION, COLOUR_BROWN), SetDataTip(STR_INDUSTRY_DIRECTORY_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
 		NWidget(WWT_SHADEBOX, COLOUR_BROWN),
+		NWidget(WWT_DEFSIZEBOX, COLOUR_BROWN),
 		NWidget(WWT_STICKYBOX, COLOUR_BROWN),
 	EndContainer(),
 	NWidget(NWID_HORIZONTAL),
@@ -1406,6 +1409,7 @@ static const NWidgetPart _nested_industr
 		NWidget(WWT_CLOSEBOX, COLOUR_BROWN),
 		NWidget(WWT_CAPTION, COLOUR_BROWN, WID_IC_CAPTION), SetDataTip(STR_INDUSTRY_CARGOES_INDUSTRY_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
 		NWidget(WWT_SHADEBOX, COLOUR_BROWN),
+		NWidget(WWT_DEFSIZEBOX, COLOUR_BROWN),
 		NWidget(WWT_STICKYBOX, COLOUR_BROWN),
 	EndContainer(),
 	NWidget(NWID_HORIZONTAL),