diff --git a/tests/block_test_util.go b/tests/block_test_util.go
index a76037405b..3b88753b1c 100644
--- a/tests/block_test_util.go
+++ b/tests/block_test_util.go
@@ -222,7 +222,7 @@ func (t *BlockTest) genesis(config *params.ChainConfig) *core.Genesis {
 }
 
 /*
-See https://github.com/ethereum/tests/wiki/Blockchain-Tests-II
+See https://ethereum-tests.readthedocs.io/en/latest/blockchain-ref.html
 
 	Whether a block is valid or not is a bit subtle, it's defined by presence of
 	blockHeader, transactions and uncleHeaders fields. If they are missing, the block is