diff --git a/src/lua_baselib.c b/src/lua_baselib.c
index 6b25e32ea..1b576eebb 100644
--- a/src/lua_baselib.c
+++ b/src/lua_baselib.c
@@ -170,8 +170,13 @@ static const struct {
 	{META_SEG,          "seg_t"},
 	{META_NODE,         "node_t"},
 #endif
+	{META_SLOPE,        "slope_t"},
+	{META_VECTOR2,      "vector2_t"},
+	{META_VECTOR3,      "vector3_t"},
 	{META_MAPHEADER,    "mapheader_t"},
 
+	{META_POLYOBJ,      "polyobj_t"},
+
 	{META_CVAR,         "consvar_t"},
 
 	{META_SECTORLINES,  "sector_t.lines"},