diff --git a/cmd/utils/flags.go b/cmd/utils/flags.go
index 5de9c982d4..81ce27ef4c 100644
--- a/cmd/utils/flags.go
+++ b/cmd/utils/flags.go
@@ -1515,15 +1515,15 @@ func setPeerRequiredBlocks(ctx *cli.Context, cfg *ethconfig.Config) {
 	for _, entry := range strings.Split(peerRequiredBlocks, ",") {
 		parts := strings.Split(entry, "=")
 		if len(parts) != 2 {
-			Fatalf("Invalid required block entry: %s", entry)
+			Fatalf("Invalid peer required block entry: %s", entry)
 		}
 		number, err := strconv.ParseUint(parts[0], 0, 64)
 		if err != nil {
-			Fatalf("Invalid required block number %s: %v", parts[0], err)
+			Fatalf("Invalid peer required block number %s: %v", parts[0], err)
 		}
 		var hash common.Hash
 		if err = hash.UnmarshalText([]byte(parts[1])); err != nil {
-			Fatalf("Invalid required block hash %s: %v", parts[1], err)
+			Fatalf("Invalid peer required block hash %s: %v", parts[1], err)
 		}
 		cfg.PeerRequiredBlocks[number] = hash
 	}
diff --git a/eth/ethconfig/config.go b/eth/ethconfig/config.go
index 8089794948..c9272758ab 100644
--- a/eth/ethconfig/config.go
+++ b/eth/ethconfig/config.go
@@ -144,7 +144,7 @@ type Config struct {
 
 	TxLookupLimit uint64 `toml:",omitempty"` // The maximum number of blocks from head whose tx indices are reserved.
 
-	// RequiredBlocks is a set of block number -> hash mappings which must be in the
+	// PeerRequiredBlocks is a set of block number -> hash mappings which must be in the
 	// canonical chain of all remote peers. Setting the option makes geth verify the
 	// presence of these blocks for every new peer connection.
 	PeerRequiredBlocks map[uint64]common.Hash `toml:"-"`
diff --git a/eth/ethconfig/gen_config.go b/eth/ethconfig/gen_config.go
index fdb6fe11e1..874e30dffd 100644
--- a/eth/ethconfig/gen_config.go
+++ b/eth/ethconfig/gen_config.go
@@ -26,7 +26,7 @@ func (c Config) MarshalTOML() (interface{}, error) {
 		NoPruning                       bool
 		NoPrefetch                      bool
 		TxLookupLimit                   uint64                 `toml:",omitempty"`
-		PeerRequiredBlocks              		map[uint64]common.Hash `toml:"-"`
+		PeerRequiredBlocks              map[uint64]common.Hash `toml:"-"`
 		LightServ                       int                    `toml:",omitempty"`
 		LightIngress                    int                    `toml:",omitempty"`
 		LightEgress                     int                    `toml:",omitempty"`
@@ -120,7 +120,7 @@ func (c *Config) UnmarshalTOML(unmarshal func(interface{}) error) error {
 		NoPruning                       *bool
 		NoPrefetch                      *bool
 		TxLookupLimit                   *uint64                `toml:",omitempty"`
-		PeerRequiredBlocks              		map[uint64]common.Hash `toml:"-"`
+		PeerRequiredBlocks              map[uint64]common.Hash `toml:"-"`
 		LightServ                       *int                   `toml:",omitempty"`
 		LightIngress                    *int                   `toml:",omitempty"`
 		LightEgress                     *int                   `toml:",omitempty"`