diff --git a/params/config.go b/params/config.go
index d955dd161b0a..a563041d2301 100644
--- a/params/config.go
+++ b/params/config.go
@@ -739,8 +739,13 @@ func (s ScrollConfig) String() string {
 		maxTxPayloadBytesPerBlock = fmt.Sprintf("%v", *s.MaxTxPayloadBytesPerBlock)
 	}
 
-	return fmt.Sprintf("{useZktrie: %v, maxTxPerBlock: %v, MaxTxPayloadBytesPerBlock: %v, feeVaultAddress: %v, l1Config: %v}",
-		s.UseZktrie, maxTxPerBlock, maxTxPayloadBytesPerBlock, s.FeeVaultAddress, s.L1Config.String())
+	genesisStateRoot := "<nil>"
+	if s.GenesisStateRoot != nil {
+		genesisStateRoot = fmt.Sprintf("%v", *s.GenesisStateRoot)
+	}
+
+	return fmt.Sprintf("{useZktrie: %v, maxTxPerBlock: %v, MaxTxPayloadBytesPerBlock: %v, feeVaultAddress: %v, l1Config: %v, genesisStateRoot: %v}",
+		s.UseZktrie, maxTxPerBlock, maxTxPayloadBytesPerBlock, s.FeeVaultAddress, s.L1Config.String(), genesisStateRoot)
 }
 
 // IsValidTxCount returns whether the given block's transaction count is below the limit.