diff --git a/src/mapgen_v6.cpp b/src/mapgen_v6.cpp
index 3a11a0c3d..bf432f076 100644
--- a/src/mapgen_v6.cpp
+++ b/src/mapgen_v6.cpp
@@ -128,7 +128,7 @@ MapgenV6::MapgenV6(int mapgenid, MapgenV6Params *params, EmergeManager *emerge)
 	if (c_stair_desert_stone == CONTENT_IGNORE)
 		c_stair_desert_stone = c_desert_stone;
 	if (c_dirt_with_grass == CONTENT_IGNORE)
-		c_dirt_with_grass = c_dirt
+		c_dirt_with_grass = c_dirt;
 	if (c_lava_source == CONTENT_IGNORE)
 		c_lava_source = c_water_source;
 }