diff --git a/api/pool.go b/api/pool.go
index 4d1a5430..45c5ab0f 100644
--- a/api/pool.go
+++ b/api/pool.go
@@ -12,8 +12,8 @@ func NewTxPoolAPI() *TxPool {
 }
 
 type content struct {
-	Pending any
-	Queued  any
+	Pending any `json:"pending"`
+	Queued  any `json:"queued"`
 }
 
 func emptyPool() content {