diff --git a/celestia/src/celestia/celx.cpp b/celestia/src/celestia/celx.cpp
index a00b933..736f8b3 100644
--- a/celestia/src/celestia/celx.cpp
+++ b/celestia/src/celestia/celx.cpp
@@ -669,7 +669,10 @@ static int resumeLuaThread(lua_State *L, lua_State *co, int narg)
     //if (!lua_checkstack(co, narg))
     //   luaL_error(L, "too many arguments to resume");
     lua_xmove(L, co, narg);
-#if LUA_VERSION_NUM >= 502
+#if LUA_VERSION_NUM >= 504
+    int nresults;
+    status = lua_resume(co, NULL, narg, &nresults);
+#elif LUA_VERSION_NUM >= 502
     status = lua_resume(co, NULL, narg);
 #else
     status = lua_resume(co, narg);