diff --git a/core/genesis.go b/core/genesis.go
index aec86744181d..7a7bd194a5cf 100644
--- a/core/genesis.go
+++ b/core/genesis.go
@@ -413,6 +413,8 @@ func (g *Genesis) configOrDefault(ghash common.Hash) *params.ChainConfig {
 		return g.Config
 	case ghash == params.MainnetGenesisHash:
 		return params.MainnetChainConfig
+	case ghash == params.HoleskyGenesisHash:
+		return params.HoleskyChainConfig
 	case ghash == params.SepoliaGenesisHash:
 		return params.SepoliaChainConfig
 	case ghash == params.GoerliGenesisHash:
diff --git a/params/config.go b/params/config.go
index fb5175119ad1..bb6cbe785812 100644
--- a/params/config.go
+++ b/params/config.go
@@ -642,7 +642,7 @@ func (c *ChainConfig) CheckConfigForkOrder() error {
 						lastFork.name, cur.name, cur.block)
 				} else {
 					return fmt.Errorf("unsupported fork ordering: %v not enabled, but %v enabled at timestamp %v",
-						lastFork.name, cur.name, cur.timestamp)
+						lastFork.name, cur.name, *cur.timestamp)
 				}
 
 			// Fork (whether defined by block or timestamp) must follow the fork definition sequence
@@ -652,7 +652,7 @@ func (c *ChainConfig) CheckConfigForkOrder() error {
 						lastFork.name, lastFork.block, cur.name, cur.block)
 				} else if lastFork.timestamp != nil && *lastFork.timestamp > *cur.timestamp {
 					return fmt.Errorf("unsupported fork ordering: %v enabled at timestamp %v, but %v enabled at timestamp %v",
-						lastFork.name, lastFork.timestamp, cur.name, cur.timestamp)
+						lastFork.name, *lastFork.timestamp, cur.name, *cur.timestamp)
 				}
 
 				// Timestamp based forks can follow block based ones, but not the other way around