https://github.com/litecoin-project/litecoin/blob/master/src/main.cpp#L4161

In the code it says
nCheckDepth = 1000000000; // suffices until the year 19000

But Litecoin is 4x faster then Bitcoin.
The note should say "until the year 4750"

or should the nCheckDepth be changed into 4000000000 since nCheckDepth 1000000000 is straight from Bitcoin 0.13 and Litecoin should have 4000000000 ?