diff --git a/src/emerge.cpp b/src/emerge.cpp
index 9b3394a23..510e7590f 100644
--- a/src/emerge.cpp
+++ b/src/emerge.cpp
@@ -186,12 +186,12 @@ EmergeManager::~EmergeManager()
 
 void EmergeManager::initMapgens(MapgenParams *params)
 {
-	FATAL_ERROR_IF(!m_mapgens.empty(), "mapgen already inited.");
+	FATAL_ERROR_IF(!m_mapgens.empty(), "Mapgen already initialised.");
 
 	mgparams = params;
 
 	for (u32 i = 0; i != m_threads.size(); i++)
-		m_mapgens.push_back(Mapgen::createMapgen(params->mgtype, i, params, this));
+		m_mapgens.push_back(Mapgen::createMapgen(params->mgtype, params, this));
 }
 
 
diff --git a/src/mapgen/mapgen.cpp b/src/mapgen/mapgen.cpp
index c46ff7c83..bdbbc01f7 100644
--- a/src/mapgen/mapgen.cpp
+++ b/src/mapgen/mapgen.cpp
@@ -148,8 +148,8 @@ const char *Mapgen::getMapgenName(MapgenType mgtype)
 }
 
 
-Mapgen *Mapgen::createMapgen(MapgenType mgtype, int mgid,
-	MapgenParams *params, EmergeManager *emerge)
+Mapgen *Mapgen::createMapgen(MapgenType mgtype, MapgenParams *params,
+	EmergeManager *emerge)
 {
 	switch (mgtype) {
 	case MAPGEN_CARPATHIAN:
diff --git a/src/mapgen/mapgen.h b/src/mapgen/mapgen.h
index b60aea57e..414c011d9 100644
--- a/src/mapgen/mapgen.h
+++ b/src/mapgen/mapgen.h
@@ -208,8 +208,8 @@ public:
 	// Mapgen management functions
 	static MapgenType getMapgenType(const std::string &mgname);
 	static const char *getMapgenName(MapgenType mgtype);
-	static Mapgen *createMapgen(MapgenType mgtype, int mgid,
-		MapgenParams *params, EmergeManager *emerge);
+	static Mapgen *createMapgen(MapgenType mgtype, MapgenParams *params,
+		EmergeManager *emerge);
 	static MapgenParams *createMapgenParams(MapgenType mgtype);
 	static void getMapgenNames(std::vector<const char *> *mgnames, bool include_hidden);