diff --git a/consensus/clique/clique.go b/consensus/clique/clique.go
index b693e8051..449095e72 100644
--- a/consensus/clique/clique.go
+++ b/consensus/clique/clique.go
@@ -710,7 +710,7 @@ func (c *Clique) APIs(chain consensus.ChainHeaderReader) []rpc.API {
 func SealHash(header *types.Header) (hash common.Hash) {
 	hasher := sha3.NewLegacyKeccak256()
 	encodeSigHeader(hasher, header)
-	hasher.Sum(hash[:0])
+	hasher.(crypto.KeccakState).Read(hash[:])
 	return hash
 }
 
diff --git a/consensus/clique/clique_test.go b/consensus/clique/clique_test.go
index 4b8ff807f..1bd32acd3 100644
--- a/consensus/clique/clique_test.go
+++ b/consensus/clique/clique_test.go
@@ -112,3 +112,16 @@ func TestReimportMirroredState(t *testing.T) {
 		t.Fatalf("chain head mismatch: have %d, want %d", head, 3)
 	}
 }
+
+func TestSealHash(t *testing.T) {
+	have := SealHash(&types.Header{
+		Difficulty: new(big.Int),
+		Number:     new(big.Int),
+		Extra:      make([]byte, 32+65),
+		BaseFee:    new(big.Int),
+	})
+	want := common.HexToHash("0xbd3d1fa43fbc4c5bfcc91b179ec92e2861df3654de60468beb908ff805359e8f")
+	if have != want {
+		t.Errorf("have %x, want %x", have, want)
+	}
+}