diff --git a/beacon-chain/rpc/apimiddleware/structs.go b/beacon-chain/rpc/apimiddleware/structs.go
index c529a0ca7..d267d5021 100644
--- a/beacon-chain/rpc/apimiddleware/structs.go
+++ b/beacon-chain/rpc/apimiddleware/structs.go
@@ -813,7 +813,7 @@ type forkChoiceNodeJson struct {
 	Weight                   string `json:"weight"`
 	ExecutionOptimistic      bool   `json:"execution_optimistic"`
 	ExecutionPayload         string `json:"execution_payload" hex:"true"`
-	TimeStamp                string `json:"timestamp" time:"true"`
+	TimeStamp                string `json:"timestamp"`
 }
 
 //----------------