diff --git a/src/script/lua_api/l_mapgen.cpp b/src/script/lua_api/l_mapgen.cpp
index c2b461b4..c063919b 100644
--- a/src/script/lua_api/l_mapgen.cpp
+++ b/src/script/lua_api/l_mapgen.cpp
@@ -244,7 +244,7 @@ bool read_schematic_def(lua_State *L, int index,
 
 	//// Get schematic size
 	lua_getfield(L, index, "size");
-	v3s16 size = read_v3s16(L, -1);
+	v3s16 size = check_v3s16(L, -1);
 	lua_pop(L, 1);
 
 	schem->size = size;
@@ -995,9 +995,9 @@ int ModApiMapgen::l_generate_ores(lua_State *L)
 	mg.vm   = LuaVoxelManip::checkobject(L, 1)->vm;
 	mg.ndef = getServer(L)->getNodeDefManager();
 
-	v3s16 pmin = lua_istable(L, 2) ? read_v3s16(L, 2) :
+	v3s16 pmin = lua_istable(L, 2) ? check_v3s16(L, 2) :
 			mg.vm->m_area.MinEdge + v3s16(1,1,1) * MAP_BLOCKSIZE;
-	v3s16 pmax = lua_istable(L, 3) ? read_v3s16(L, 3) :
+	v3s16 pmax = lua_istable(L, 3) ? check_v3s16(L, 3) :
 			mg.vm->m_area.MaxEdge - v3s16(1,1,1) * MAP_BLOCKSIZE;
 	sortBoxVerticies(pmin, pmax);
 
@@ -1019,9 +1019,9 @@ int ModApiMapgen::l_generate_decorations(lua_State *L)
 	mg.vm   = LuaVoxelManip::checkobject(L, 1)->vm;
 	mg.ndef = getServer(L)->getNodeDefManager();
 
-	v3s16 pmin = lua_istable(L, 2) ? read_v3s16(L, 2) :
+	v3s16 pmin = lua_istable(L, 2) ? check_v3s16(L, 2) :
 			mg.vm->m_area.MinEdge + v3s16(1,1,1) * MAP_BLOCKSIZE;
-	v3s16 pmax = lua_istable(L, 3) ? read_v3s16(L, 3) :
+	v3s16 pmax = lua_istable(L, 3) ? check_v3s16(L, 3) :
 			mg.vm->m_area.MaxEdge - v3s16(1,1,1) * MAP_BLOCKSIZE;
 	sortBoxVerticies(pmin, pmax);
 
@@ -1040,8 +1040,8 @@ int ModApiMapgen::l_create_schematic(lua_State *L)
 
 	Map *map = &(getEnv(L)->getMap());
 
-	v3s16 p1 = read_v3s16(L, 1);
-	v3s16 p2 = read_v3s16(L, 2);
+	v3s16 p1 = check_v3s16(L, 1);
+	v3s16 p2 = check_v3s16(L, 2);
 	sortBoxVerticies(p1, p2);
 
 	std::vector<std::pair<v3s16, u8> > prob_list;
@@ -1050,7 +1050,7 @@ int ModApiMapgen::l_create_schematic(lua_State *L)
 		while (lua_next(L, 3)) {
 			if (lua_istable(L, -1)) {
 				lua_getfield(L, -1, "pos");
-				v3s16 pos = read_v3s16(L, -1);
+				v3s16 pos = check_v3s16(L, -1);
 				lua_pop(L, 1);
 
 				u8 prob = getintfield_default(L, -1, "prob", MTSCHEM_PROB_ALWAYS);
@@ -1101,7 +1101,7 @@ int ModApiMapgen::l_place_schematic(lua_State *L)
 	SchematicManager *schemmgr = getServer(L)->getEmergeManager()->schemmgr;
 
 	//// Read position
-	v3s16 p = read_v3s16(L, 1);
+	v3s16 p = check_v3s16(L, 1);
 
 	//// Read rotation
 	int rot = ROTATE_0;
diff --git a/src/script/lua_api/l_vmanip.cpp b/src/script/lua_api/l_vmanip.cpp
index de761211..061ee603 100644
--- a/src/script/lua_api/l_vmanip.cpp
+++ b/src/script/lua_api/l_vmanip.cpp
@@ -46,8 +46,8 @@ int LuaVoxelManip::l_read_from_map(lua_State *L)
 	LuaVoxelManip *o = checkobject(L, 1);
 	MMVManip *vm = o->vm;
 
-	v3s16 bp1 = getNodeBlockPos(read_v3s16(L, 2));
-	v3s16 bp2 = getNodeBlockPos(read_v3s16(L, 3));
+	v3s16 bp1 = getNodeBlockPos(check_v3s16(L, 2));
+	v3s16 bp2 = getNodeBlockPos(check_v3s16(L, 3));
 	sortBoxVerticies(bp1, bp2);
 
 	vm->initialEmerge(bp1, bp2);
@@ -116,7 +116,7 @@ int LuaVoxelManip::l_get_node_at(lua_State *L)
 	GET_ENV_PTR;
 
 	LuaVoxelManip *o = checkobject(L, 1);
-	v3s16 pos        = read_v3s16(L, 2);
+	v3s16 pos        = check_v3s16(L, 2);
 
 	pushnode(L, o->vm->getNodeNoExNoEmerge(pos), env->getGameDef()->ndef());
 	return 1;
@@ -128,7 +128,7 @@ int LuaVoxelManip::l_set_node_at(lua_State *L)
 	GET_ENV_PTR;
 
 	LuaVoxelManip *o = checkobject(L, 1);
-	v3s16 pos        = read_v3s16(L, 2);
+	v3s16 pos        = check_v3s16(L, 2);
 	MapNode n        = readnode(L, 3, env->getGameDef()->ndef());
 
 	o->vm->setNodeNoEmerge(pos, n);
@@ -171,8 +171,8 @@ int LuaVoxelManip::l_calc_lighting(lua_State *L)
 	v3s16 yblock = v3s16(0, 1, 0) * MAP_BLOCKSIZE;
 	v3s16 fpmin  = vm->m_area.MinEdge;
 	v3s16 fpmax  = vm->m_area.MaxEdge;
-	v3s16 pmin   = lua_istable(L, 2) ? read_v3s16(L, 2) : fpmin + yblock;
-	v3s16 pmax   = lua_istable(L, 3) ? read_v3s16(L, 3) : fpmax - yblock;
+	v3s16 pmin   = lua_istable(L, 2) ? check_v3s16(L, 2) : fpmin + yblock;
+	v3s16 pmax   = lua_istable(L, 3) ? check_v3s16(L, 3) : fpmax - yblock;
 
 	sortBoxVerticies(pmin, pmax);
 	if (!vm->m_area.contains(VoxelArea(pmin, pmax)))
@@ -206,8 +206,8 @@ int LuaVoxelManip::l_set_lighting(lua_State *L)
 	MMVManip *vm = o->vm;
 
 	v3s16 yblock = v3s16(0, 1, 0) * MAP_BLOCKSIZE;
-	v3s16 pmin = lua_istable(L, 3) ? read_v3s16(L, 3) : vm->m_area.MinEdge + yblock;
-	v3s16 pmax = lua_istable(L, 4) ? read_v3s16(L, 4) : vm->m_area.MaxEdge - yblock;
+	v3s16 pmin = lua_istable(L, 3) ? check_v3s16(L, 3) : vm->m_area.MinEdge + yblock;
+	v3s16 pmax = lua_istable(L, 4) ? check_v3s16(L, 4) : vm->m_area.MaxEdge - yblock;
 
 	sortBoxVerticies(pmin, pmax);
 	if (!vm->m_area.contains(VoxelArea(pmin, pmax)))
@@ -402,7 +402,7 @@ int LuaVoxelManip::create_object(lua_State *L)
 
 	Map *map = &(env->getMap());
 	LuaVoxelManip *o = (lua_istable(L, 1) && lua_istable(L, 2)) ?
-		new LuaVoxelManip(map, read_v3s16(L, 1), read_v3s16(L, 2)) :
+		new LuaVoxelManip(map, check_v3s16(L, 1), check_v3s16(L, 2)) :
 		new LuaVoxelManip(map);
 
 	*(void **)(lua_newuserdata(L, sizeof(void *))) = o;