diff --git a/src/lang/english.txt b/src/lang/english.txt
--- a/src/lang/english.txt
+++ b/src/lang/english.txt
@@ -694,6 +694,8 @@ STR_SMALLMAP_TOWN                       
 STR_SMALLMAP_DISABLE_ALL                                        :{BLACK}Disable all
 STR_SMALLMAP_ENABLE_ALL                                         :{BLACK}Enable all
 STR_SMALLMAP_SHOW_HEIGHT                                        :{BLACK}Show height
+STR_SMALLMAP_TOOLTIP_DISABLE_ALL                                :{BLACK}Display no industries on the map
+STR_SMALLMAP_TOOLTIP_ENABLE_ALL                                 :{BLACK}Display all industries on the map
 STR_SMALLMAP_TOOLTIP_SHOW_HEIGHT                                :{BLACK}Toggle display of heightmap
 
 # Status bar messages
diff --git a/src/smallmap_gui.cpp b/src/smallmap_gui.cpp
--- a/src/smallmap_gui.cpp
+++ b/src/smallmap_gui.cpp
@@ -1257,8 +1257,8 @@ static const NWidgetPart _nested_smallma
 			NWidget(NWID_HORIZONTAL),
 				NWidget(NWID_SELECTION, INVALID_COLOUR, SM_WIDGET_SELECTINDUSTRIES),
 					NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
-						NWidget(WWT_TEXTBTN, COLOUR_BROWN, SM_WIDGET_ENABLEINDUSTRIES), SetDataTip(STR_SMALLMAP_ENABLE_ALL, STR_NULL),
-						NWidget(WWT_TEXTBTN, COLOUR_BROWN, SM_WIDGET_DISABLEINDUSTRIES), SetDataTip(STR_SMALLMAP_DISABLE_ALL, STR_NULL),
+						NWidget(WWT_TEXTBTN, COLOUR_BROWN, SM_WIDGET_ENABLEINDUSTRIES), SetDataTip(STR_SMALLMAP_ENABLE_ALL, STR_SMALLMAP_TOOLTIP_ENABLE_ALL),
+						NWidget(WWT_TEXTBTN, COLOUR_BROWN, SM_WIDGET_DISABLEINDUSTRIES), SetDataTip(STR_SMALLMAP_DISABLE_ALL, STR_SMALLMAP_TOOLTIP_DISABLE_ALL),
 						NWidget(WWT_TEXTBTN, COLOUR_BROWN, SM_WIDGET_SHOW_HEIGHT), SetDataTip(STR_SMALLMAP_SHOW_HEIGHT, STR_SMALLMAP_TOOLTIP_SHOW_HEIGHT),
 					EndContainer(),
 					NWidget(NWID_SPACER), SetFill(1, 1),