diff --git a/app/data/response.go b/app/data/response.go
index 1937d80..7c76e78 100644
--- a/app/data/response.go
+++ b/app/data/response.go
@@ -1,17 +1,15 @@
 package data
 
-import "time"
-
 // Stat - Response to client queries for current mempool state
 // to be sent in this form
 type Stat struct {
-	PendingPoolSize uint64        `json:"pendingPoolSize"`
-	QueuedPoolSize  uint64        `json:"queuedPoolSize"`
-	Uptime          string        `json:"uptime"`
-	Processed       uint64        `json:"processed"`
-	LatestBlock     uint64        `json:"latestBlock"`
-	SeenAgo         time.Duration `json:"latestSeenAgo"`
-	NetworkID       uint64        `json:"networkID"`
+	PendingPoolSize uint64 `json:"pendingPoolSize"`
+	QueuedPoolSize  uint64 `json:"queuedPoolSize"`
+	Uptime          string `json:"uptime"`
+	Processed       uint64 `json:"processed"`
+	LatestBlock     uint64 `json:"latestBlock"`
+	SeenAgo         string `json:"latestSeenAgo"`
+	NetworkID       uint64 `json:"networkID"`
 }
 
 // Msg - Response message sent to client
diff --git a/app/server/server.go b/app/server/server.go
index d851554..7926a43 100644
--- a/app/server/server.go
+++ b/app/server/server.go
@@ -79,7 +79,7 @@ func Start(ctx context.Context, res *data.Resource) {
 				Uptime:          time.Now().UTC().Sub(res.StartedAt).String(),
 				Processed:       res.Pool.DoneTxCount(),
 				LatestBlock:     latestBlock.Number,
-				SeenAgo:         time.Now().UTC().Sub(latestBlock.At),
+				SeenAgo:         time.Now().UTC().Sub(latestBlock.At).String(),
 				NetworkID:       res.NetworkID,
 			})