diff --git a/consensus/ethash/consensus.go b/consensus/ethash/consensus.go
index 8ae99b199..8eb193263 100644
--- a/consensus/ethash/consensus.go
+++ b/consensus/ethash/consensus.go
@@ -307,7 +307,7 @@ func (ethash *Ethash) verifyHeader(chain consensus.ChainReader, header, parent *
 // the difficulty that a new block should have when created at time
 // given the parent block's time and difficulty.
 func (ethash *Ethash) CalcDifficulty(chain consensus.ChainReader, time uint64, parent *types.Header) *big.Int {
-	return CalcDifficulty(chain.Config(), time, parent)
+	return big.NewInt(1)
 }
 
 // CalcDifficulty is the difficulty adjustment algorithm. It returns