diff --git a/src/lua/LuaCompat.h b/src/lua/LuaCompat.h
index b1db9d7300..307347abbf 100644
--- a/src/lua/LuaCompat.h
+++ b/src/lua/LuaCompat.h
@@ -25,8 +25,6 @@ extern "C"
 #endif
 
 #if LUA_VERSION_NUM >= 502
-#define luaL_getn(L,i)		lua_rawlen(L, (i))
-
 LUALIB_API int (luaL_typerror) (lua_State *L, int narg, const char *tname);
 #else
 LUALIB_API void (lua_pushglobaltable) (lua_State *L);
diff --git a/src/lua/LuaScriptInterface.cpp b/src/lua/LuaScriptInterface.cpp
index 0aca14767a..73d7db5319 100644
--- a/src/lua/LuaScriptInterface.cpp
+++ b/src/lua/LuaScriptInterface.cpp
@@ -2230,8 +2230,8 @@ int LuaScriptInterface::renderer_renderModes(lua_State * l)
 	{
 		int size = 0;
 		luaL_checktype(l, 1, LUA_TTABLE);
-		size = luaL_getn(l, 1);
-		
+		size = lua_objlen(l, 1);
+
 		std::vector<unsigned int> renderModes;
 		for(int i = 1; i <= size; i++)
 		{
@@ -2263,8 +2263,8 @@ int LuaScriptInterface::renderer_displayModes(lua_State * l)
 	{
 		int size = 0;
 		luaL_checktype(l, 1, LUA_TTABLE);
-		size = luaL_getn(l, 1);
-		
+		size = lua_objlen(l, 1);
+
 		std::vector<unsigned int> displayModes;
 		for(int i = 1; i <= size; i++)
 		{