diff --git a/src/lang/japanese.txt b/src/lang/japanese.txt
--- a/src/lang/japanese.txt
+++ b/src/lang/japanese.txt
@@ -3112,7 +3112,6 @@ STR_MAPGEN_DESERT_COVERAGE                                      :{BLACK}砂漠の範囲:
 STR_MAPGEN_DESERT_COVERAGE_UP                                   :{BLACK}砂漠の範囲を10％増やします
 STR_MAPGEN_DESERT_COVERAGE_DOWN                                 :{BLACK}砂漠の範囲を10％減らします
 STR_MAPGEN_DESERT_COVERAGE_TEXT                                 :{BLACK}{NUM}%
-STR_MAPGEN_LAND_GENERATOR                                       :{BLACK}地形作成:
 STR_MAPGEN_TERRAIN_TYPE                                         :{BLACK}地形種類:
 STR_MAPGEN_SEA_LEVEL                                            :{BLACK}海水位:
 STR_MAPGEN_QUANTITY_OF_RIVERS                                   :{BLACK}河川: