diff --git a/src/genworld_gui.cpp b/src/genworld_gui.cpp
index b98c34c608..602ae8d406 100644
--- a/src/genworld_gui.cpp
+++ b/src/genworld_gui.cpp
@@ -172,14 +172,14 @@ static constexpr std::initializer_list<NWidgetPart> _nested_generate_landscape_w
 			NWidget(NWID_VERTICAL),
 				NWidget(NWID_HORIZONTAL, NWidContainerFlag::EqualSize),
 					NWidget(WWT_TEXT, INVALID_COLOUR), SetStringTip(STR_MAPGEN_NORTHWEST), SetPadding(0, WidgetDimensions::unscaled.hsep_normal, 0, 0), SetFill(1, 1), SetAlignment(SA_RIGHT | SA_VERT_CENTER),
-					NWidget(WWT_TEXTBTN, COLOUR_ORANGE, WID_GL_WATER_NW), SetToolTip(STR_MAPGEN_NORTHWEST), SetFill(1, 1),
-					NWidget(WWT_TEXTBTN, COLOUR_ORANGE, WID_GL_WATER_NE), SetToolTip(STR_MAPGEN_NORTHEAST), SetFill(1, 1),
+					NWidget(WWT_TEXTBTN, COLOUR_ORANGE, WID_GL_WATER_NW), SetToolTip(STR_MAPGEN_NORTHWEST_TOOLTIP), SetFill(1, 1),
+					NWidget(WWT_TEXTBTN, COLOUR_ORANGE, WID_GL_WATER_NE), SetToolTip(STR_MAPGEN_NORTHEAST_TOOLTIP), SetFill(1, 1),
 					NWidget(WWT_TEXT, INVALID_COLOUR), SetStringTip(STR_MAPGEN_NORTHEAST), SetPadding(0, 0, 0, WidgetDimensions::unscaled.hsep_normal), SetFill(1, 1),
 				EndContainer(),
 				NWidget(NWID_HORIZONTAL, NWidContainerFlag::EqualSize),
 					NWidget(WWT_TEXT, INVALID_COLOUR), SetStringTip(STR_MAPGEN_SOUTHWEST), SetPadding(0, WidgetDimensions::unscaled.hsep_normal, 0, 0), SetFill(1, 1), SetAlignment(SA_RIGHT | SA_VERT_CENTER),
-					NWidget(WWT_TEXTBTN, COLOUR_ORANGE, WID_GL_WATER_SW), SetToolTip(STR_MAPGEN_SOUTHWEST), SetFill(1, 1),
-					NWidget(WWT_TEXTBTN, COLOUR_ORANGE, WID_GL_WATER_SE), SetToolTip(STR_MAPGEN_SOUTHEAST), SetFill(1, 1),
+					NWidget(WWT_TEXTBTN, COLOUR_ORANGE, WID_GL_WATER_SW), SetToolTip(STR_MAPGEN_SOUTHWEST_TOOLTIP), SetFill(1, 1),
+					NWidget(WWT_TEXTBTN, COLOUR_ORANGE, WID_GL_WATER_SE), SetToolTip(STR_MAPGEN_SOUTHEAST_TOOLTIP), SetFill(1, 1),
 					NWidget(WWT_TEXT, INVALID_COLOUR), SetStringTip(STR_MAPGEN_SOUTHEAST), SetPadding(0, 0, 0, WidgetDimensions::unscaled.hsep_normal), SetFill(1, 1),
 				EndContainer(),
 			EndContainer(),
diff --git a/src/lang/english.txt b/src/lang/english.txt
index 566fc9ad01..dd2f426621 100644
--- a/src/lang/english.txt
+++ b/src/lang/english.txt
@@ -3427,6 +3427,10 @@ STR_MAPGEN_NORTHWEST                                            :{BLACK}Northwes
 STR_MAPGEN_NORTHEAST                                            :{BLACK}Northeast
 STR_MAPGEN_SOUTHEAST                                            :{BLACK}Southeast
 STR_MAPGEN_SOUTHWEST                                            :{BLACK}Southwest
+STR_MAPGEN_NORTHWEST_TOOLTIP                                    :Toggle water or freeform edge on the northwest map edge
+STR_MAPGEN_NORTHEAST_TOOLTIP                                    :Toggle water or freeform edge on the northeast map edge
+STR_MAPGEN_SOUTHEAST_TOOLTIP                                    :Toggle water or freeform edge on the southeast map edge
+STR_MAPGEN_SOUTHWEST_TOOLTIP                                    :Toggle water or freeform edge on the southwest map edge
 STR_MAPGEN_BORDER_FREEFORM                                      :{BLACK}Freeform
 STR_MAPGEN_BORDER_WATER                                         :{BLACK}Water
 STR_MAPGEN_BORDER_RANDOM                                        :{BLACK}Random