diff --git a/core/tx_pool.go b/core/tx_pool.go
index b91f3d7d53..0f008ddc0d 100644
--- a/core/tx_pool.go
+++ b/core/tx_pool.go
@@ -104,7 +104,7 @@ var (
 )
 
 // TxStatus is the current status of a transaction as seen py the pool.
-type TxStatus int
+type TxStatus uint
 
 const (
 	TxStatusUnknown TxStatus = iota
diff --git a/les/handler_test.go b/les/handler_test.go
index 356a843f4c..9e63e15a60 100644
--- a/les/handler_test.go
+++ b/les/handler_test.go
@@ -464,6 +464,16 @@ func TestTransactionStatusLes2(t *testing.T) {
 	if _, err := chain.InsertChain(gchain); err != nil {
 		panic(err)
 	}
+	// wait until TxPool processes the inserted block
+	for i := 0; i < 10; i++ {
+		if pending, _ := txpool.Stats(); pending == 1 {
+			break
+		}
+		time.Sleep(100 * time.Millisecond)
+	}
+	if pending, _ := txpool.Stats(); pending != 1 {
+		t.Fatalf("pending count mismatch: have %d, want 1", pending)
+	}
 
 	// check if their status is included now
 	block1hash := core.GetCanonicalHash(db, 1)