diff --git a/src/mg_biome.cpp b/src/mg_biome.cpp
index 85487654..241a0682 100644
--- a/src/mg_biome.cpp
+++ b/src/mg_biome.cpp
@@ -55,6 +55,7 @@ BiomeManager::BiomeManager(IGameDef *gamedef) :
 	b->m_nodenames.push_back("mapgen_stone");
 	b->m_nodenames.push_back("mapgen_water_source");
 	b->m_nodenames.push_back("mapgen_water_source");
+	b->m_nodenames.push_back("mapgen_river_water_source");
 	b->m_nodenames.push_back("air");
 	m_ndef->pendNodeResolve(b, NODE_RESOLVE_DEFERRED);
 
@@ -131,11 +132,12 @@ void BiomeManager::clear()
 
 void Biome::resolveNodeNames()
 {
-	getIdFromNrBacklog(&c_top,       "mapgen_dirt_with_grass", CONTENT_AIR);
-	getIdFromNrBacklog(&c_filler,    "mapgen_dirt",            CONTENT_AIR);
-	getIdFromNrBacklog(&c_stone,     "mapgen_stone",           CONTENT_AIR);
-	getIdFromNrBacklog(&c_water_top, "mapgen_water_source",    CONTENT_AIR);
-	getIdFromNrBacklog(&c_water,     "mapgen_water_source",    CONTENT_AIR);
-	getIdFromNrBacklog(&c_dust,      "air",                    CONTENT_IGNORE);
+	getIdFromNrBacklog(&c_top,         "mapgen_dirt_with_grass",    CONTENT_AIR);
+	getIdFromNrBacklog(&c_filler,      "mapgen_dirt",               CONTENT_AIR);
+	getIdFromNrBacklog(&c_stone,       "mapgen_stone",              CONTENT_AIR);
+	getIdFromNrBacklog(&c_water_top,   "mapgen_water_source",       CONTENT_AIR);
+	getIdFromNrBacklog(&c_water,       "mapgen_water_source",       CONTENT_AIR);
+	getIdFromNrBacklog(&c_river_water, "mapgen_river_water_source", CONTENT_AIR);
+	getIdFromNrBacklog(&c_dust,        "air",                       CONTENT_IGNORE);
 }
 
diff --git a/src/mg_biome.h b/src/mg_biome.h
index ce5ce2f0..e289fb16 100644
--- a/src/mg_biome.h
+++ b/src/mg_biome.h
@@ -42,6 +42,7 @@ public:
 	content_t c_stone;
 	content_t c_water_top;
 	content_t c_water;
+	content_t c_river_water;
 	content_t c_dust;
 
 	s16 depth_top;
diff --git a/src/script/lua_api/l_mapgen.cpp b/src/script/lua_api/l_mapgen.cpp
index daa040e3..e90fe32c 100644
--- a/src/script/lua_api/l_mapgen.cpp
+++ b/src/script/lua_api/l_mapgen.cpp
@@ -389,22 +389,23 @@ Biome *read_biome_def(lua_State *L, int index, INodeDefManager *ndef)
 	Biome *b = BiomeManager::create(biometype);
 
 	b->name            = getstringfield_default(L, index, "name", "");
-	b->depth_top       = getintfield_default(L, index, "depth_top",          1);
-	b->depth_filler    = getintfield_default(L, index, "depth_filler",       2);
-	b->depth_water_top = getintfield_default(L, index, "depth_water_top",    0);
-	b->y_min           = getintfield_default(L, index, "y_min",         -31000);
-	b->y_max           = getintfield_default(L, index, "y_max",          31000);
-	b->heat_point      = getfloatfield_default(L, index, "heat_point",     0.f);
-	b->humidity_point  = getfloatfield_default(L, index, "humidity_point", 0.f);
+	b->depth_top       = getintfield_default(L,    index, "depth_top",       1);
+	b->depth_filler    = getintfield_default(L,    index, "depth_filler",    2);
+	b->depth_water_top = getintfield_default(L,    index, "depth_water_top", 0);
+	b->y_min           = getintfield_default(L,    index, "y_min",           -31000);
+	b->y_max           = getintfield_default(L,    index, "y_max",           31000);
+	b->heat_point      = getfloatfield_default(L,  index, "heat_point",      0.f);
+	b->humidity_point  = getfloatfield_default(L,  index, "humidity_point",  0.f);
 	b->flags           = 0; //reserved
 
 	std::vector<std::string> &nn = b->m_nodenames;
-	nn.push_back(getstringfield_default(L, index, "node_top",       ""));
-	nn.push_back(getstringfield_default(L, index, "node_filler",    ""));
-	nn.push_back(getstringfield_default(L, index, "node_stone",     ""));
-	nn.push_back(getstringfield_default(L, index, "node_water_top", ""));
-	nn.push_back(getstringfield_default(L, index, "node_water",     ""));
-	nn.push_back(getstringfield_default(L, index, "node_dust",      ""));
+	nn.push_back(getstringfield_default(L, index, "node_top",         ""));
+	nn.push_back(getstringfield_default(L, index, "node_filler",      ""));
+	nn.push_back(getstringfield_default(L, index, "node_stone",       ""));
+	nn.push_back(getstringfield_default(L, index, "node_water_top",   ""));
+	nn.push_back(getstringfield_default(L, index, "node_water",       ""));
+	nn.push_back(getstringfield_default(L, index, "node_river_water", ""));
+	nn.push_back(getstringfield_default(L, index, "node_dust",        ""));
 	ndef->pendNodeResolve(b, NODE_RESOLVE_DEFERRED);
 
 	return b;