diff --git a/txpool/pool.go b/txpool/pool.go
index 4bd7958e4..3c2d263fe 100644
--- a/txpool/pool.go
+++ b/txpool/pool.go
@@ -644,8 +644,10 @@ func (sc *SendersCache) flush(tx kv.RwTx, byNonce *ByNonce, sendersWithoutTransa
 				return err
 			}
 			if len(vv) == 0 {
-				tx.ForEach(kv.PooledSenderIDToAdress, nil, func(k, v []byte) error {
-					fmt.Printf("found:%x,%x\n", k, v)
+				tx.ForEach(kv.PooledSenderIDToAdress, nil, func(k, vvvv []byte) error {
+					if bytes.HasPrefix(k, v[:7]) {
+						fmt.Printf("found:%x,%x\n", k, vvvv)
+					}
 					return nil
 				})
 				fmt.Printf("aa: %x,%x,%x\n", k, v, vv)
@@ -674,6 +676,25 @@ func (sc *SendersCache) flush(tx kv.RwTx, byNonce *ByNonce, sendersWithoutTransa
 		}
 	}
 	sc.senderInfo = map[uint64]*senderInfo{}
+	if ASSERT {
+		tx.ForEach(kv.PooledTransaction, nil, func(k, v []byte) error {
+			vv, err := tx.GetOne(kv.PooledSenderIDToAdress, v[:8])
+			if err != nil {
+				return err
+			}
+			if len(vv) == 0 {
+				tx.ForEach(kv.PooledSenderIDToAdress, nil, func(k, vvvv []byte) error {
+					if bytes.HasPrefix(k, v[:7]) {
+						fmt.Printf("found:%x,%x\n", k, vvvv)
+					}
+					return nil
+				})
+				fmt.Printf("aa: %x,%x,%x\n", k, v, vv)
+				panic("no-no")
+			}
+			return nil
+		})
+	}
 
 	binary.BigEndian.PutUint64(encID, sc.blockHeight.Load())
 	if err := tx.Put(kv.PoolInfo, SenderCacheHeightKey, encID); err != nil {