diff --git a/src/help.cpp b/src/help.cpp
index 3b805ceb40c0..dc46687abc55 100644
--- a/src/help.cpp
+++ b/src/help.cpp
@@ -1324,7 +1324,7 @@ class terrain_topic_generator: public topic_generator
 
 			const t_translation::t_list& underlying_terrains = resources::game_map->underlying_mvt_terrain(type_.number());
 
-			ss << "\n" << N_("Base Terrain: ");
+			ss << "\n" << _("Base Terrain: ");
 
 			bool first = true;
 			BOOST_FOREACH(const t_translation::t_terrain& underlying_terrain, underlying_terrains) {