diff --git a/src/script/lua_api/l_noise.cpp b/src/script/lua_api/l_noise.cpp
index e3e76191f..90b8864d2 100644
--- a/src/script/lua_api/l_noise.cpp
+++ b/src/script/lua_api/l_noise.cpp
@@ -316,7 +316,7 @@ int LuaPerlinNoiseMap::l_getMapSlice(lua_State *L)
 	Noise *n = o->noise;
 
 	if (use_buffer)
-		lua_pushvalue(L, 3);
+		lua_pushvalue(L, 4);
 	else
 		lua_newtable(L);