diff --git a/src/lang/esperanto.txt b/src/lang/esperanto.txt
--- a/src/lang/esperanto.txt
+++ b/src/lang/esperanto.txt
@@ -2398,7 +2398,7 @@ STR_MAPGEN_DATE                         
 STR_MAPGEN_NUMBER_OF_INDUSTRIES                                 :{BLACK}Kiom da industrioj:
 STR_MAPGEN_LAND_GENERATOR                                       :{BLACK}Landgenerilo:
 STR_MAPGEN_TERRAIN_TYPE                                         :{BLACK}Terentipo:
-STR_MAPGEN_QUANTITY_OF_SEA_LAKES                                :{BLACK}Marnivelo:
+STR_MAPGEN_SEA_LEVEL                                            :{BLACK}Marnivelo:
 STR_MAPGEN_QUANTITY_OF_RIVERS                                   :{BLACK}Riveroj:
 STR_MAPGEN_SMOOTHNESS                                           :{BLACK}Reguleco:
 STR_MAPGEN_VARIETY                                              :{BLACK}Diverseca distribuo: