diff --git a/params/config.go b/params/config.go
index 6cd8dd8d4a1c..fc05b99bd2e9 100644
--- a/params/config.go
+++ b/params/config.go
@@ -535,11 +535,11 @@ type ChainConfig struct {
 
 	// Fork scheduling was switched from blocks to timestamps here
 
-	ShanghaiTime *uint64 `json:"shanghaiTime,omitempty"` // Shanghai switch time (nil = no fork, 0 = already on shanghai)
-	CancunTime   *uint64 `json:"cancunTime,omitempty"`   // Cancun switch time (nil = no fork, 0 = already on cancun)
-	PragueTime   *uint64 `json:"pragueTime,omitempty"`   // Prague switch time (nil = no fork, 0 = already on prague)
-	VerkleTime   *uint64 `json:"verkleTime,omitempty"`   // Verkle switch time (nil = no fork, 0 = already on verkle)
-	DarwinTime   *uint64 `json:"darwinTime,omitempty"`   // Darwin switch time (nil = no fork, 0 = already on darwin)
+	ShanghaiTime *uint64 `json:"shanghaiBlock,omitempty"` // Shanghai switch time (nil = no fork, 0 = already on shanghai)
+	CancunTime   *uint64 `json:"cancunTime,omitempty"`    // Cancun switch time (nil = no fork, 0 = already on cancun)
+	PragueTime   *uint64 `json:"pragueTime,omitempty"`    // Prague switch time (nil = no fork, 0 = already on prague)
+	VerkleTime   *uint64 `json:"verkleTime,omitempty"`    // Verkle switch time (nil = no fork, 0 = already on verkle)
+	DarwinTime   *uint64 `json:"darwinTime,omitempty"`    // Darwin switch time (nil = no fork, 0 = already on darwin)
 
 	// TerminalTotalDifficulty is the amount of total difficulty reached by
 	// the network that triggers the consensus upgrade.