diff --git a/callisto.c b/callisto.c
index ed97f68..6c24e47 100644
--- a/callisto.c
+++ b/callisto.c
@@ -14,8 +14,6 @@ static const luaL_Reg loadedlibs[] = {
 	{CALLISTO_ENVLIBNAME,  luaopen_environ},
 	{CALLISTO_FSYSLIBNAME, luaopen_fs},
 	{CALLISTO_JSONLIBNAME, luaopen_json},
-	{LUA_MATHLIBNAME,      luaopen_math},
-	{LUA_OSLIBNAME,        luaopen_os},
 	{CALLISTO_PROCLIBNAME, luaopen_process},
 	{NULL, NULL}
 };