diff --git a/consensus/clique/clique.go b/consensus/clique/clique.go
index 5472909846..0ff72e55c6 100644
--- a/consensus/clique/clique.go
+++ b/consensus/clique/clique.go
@@ -388,7 +388,7 @@ func (c *Clique) snapshot(chain consensus.ChainReader, number uint64, hash commo
 			}
 		}
 		// If we're at an checkpoint block, make a snapshot if it's known
-		if number%c.config.Epoch == 0 {
+		if number == 0 || (number%c.config.Epoch == 0 && chain.GetHeaderByNumber(number-1) == nil) {
 			checkpoint := chain.GetHeaderByNumber(number)
 			if checkpoint != nil {
 				hash := checkpoint.Hash()