diff --git a/eth/handler.go b/eth/handler.go
index 90d74a71bf..3b6dbec1a5 100644
--- a/eth/handler.go
+++ b/eth/handler.go
@@ -406,6 +406,7 @@ func (h *handler) unregisterPeer(id string) {
 	}
 	h.downloader.UnregisterPeer(id)
 	h.txFetcher.Drop(id)
+	h.txTracker.NotifyPeerDrop(id)
 
 	if err := h.peers.unregisterPeer(id); err != nil {
 		logger.Error("Ethereum peer removal failed", "err", err)
diff --git a/eth/txtracker/tracker.go b/eth/txtracker/tracker.go
index 8458c8253d..28f7f27aab 100644
--- a/eth/txtracker/tracker.go
+++ b/eth/txtracker/tracker.go
@@ -85,6 +85,14 @@ func (t *Tracker) Start(chain Chain) {
 	go t.loop()
 }
 
+// NotifyPeerDrop removes a disconnected peer's stats to prevent unbounded
+// growth. Safe to call from any goroutine.
+func (t *Tracker) NotifyPeerDrop(peer string) {
+	t.mu.Lock()
+	defer t.mu.Unlock()
+	delete(t.peers, peer)
+}
+
 // Stop shuts down the tracker.
 func (t *Tracker) Stop() {
 	t.sub.Unsubscribe()