diff --git a/cmd/sentry/sentry/sentry_grpc_server.go b/cmd/sentry/sentry/sentry_grpc_server.go
index 4dea3afde..5623cec53 100644
--- a/cmd/sentry/sentry/sentry_grpc_server.go
+++ b/cmd/sentry/sentry/sentry_grpc_server.go
@@ -105,6 +105,7 @@ func (bp *PeersByMinBlock) Pop() interface{} {
 	old := *bp
 	n := len(old)
 	x := old[n-1]
+	old[n-1] = PeerRef{}
 	*bp = old[0 : n-1]
 	return x
 }
diff --git a/core/types/transaction.go b/core/types/transaction.go
index 2b025b84b..4a15716f8 100644
--- a/core/types/transaction.go
+++ b/core/types/transaction.go
@@ -319,6 +319,7 @@ func (s *TxByPriceAndTime) Pop() interface{} {
 	old := *s
 	n := len(old)
 	x := old[n-1]
+	old[n-1] = nil
 	*s = old[0 : n-1]
 	return x
 }
diff --git a/eth/gasprice/gasprice.go b/eth/gasprice/gasprice.go
index f6e9e3884..e34f60e43 100644
--- a/eth/gasprice/gasprice.go
+++ b/eth/gasprice/gasprice.go
@@ -211,6 +211,7 @@ func (t *transactionsByGasPrice) Pop() interface{} {
 	old := t.txs
 	n := len(old)
 	x := old[n-1]
+	old[n-1] = nil
 	t.txs = old[0 : n-1]
 	return x
 }
@@ -289,6 +290,7 @@ func (s *sortingHeap) Pop() interface{} {
 	old := *s
 	n := len(old)
 	x := old[n-1]
+	old[n-1] = nil
 	*s = old[0 : n-1]
 	return x
 }
diff --git a/p2p/util.go b/p2p/util.go
index bd30d65d6..845107e2d 100644
--- a/p2p/util.go
+++ b/p2p/util.go
@@ -70,6 +70,7 @@ func (h *expHeap) Pop() interface{} {
 	old := *h
 	n := len(old)
 	x := old[n-1]
+	old[n-1] = expItem{}
 	*h = old[0 : n-1]
 	return x
 }
diff --git a/turbo/stages/headerdownload/header_data_struct.go b/turbo/stages/headerdownload/header_data_struct.go
index 217029d29..589c4beda 100644
--- a/turbo/stages/headerdownload/header_data_struct.go
+++ b/turbo/stages/headerdownload/header_data_struct.go
@@ -87,6 +87,7 @@ func (lq *LinkQueue) Pop() interface{} {
 	old := *lq
 	n := len(old)
 	x := old[n-1]
+	old[n-1] = nil
 	x.idx = -1
 	x.queueId = NoQueue
 	*lq = old[0 : n-1]
@@ -152,6 +153,7 @@ func (aq *AnchorQueue) Pop() interface{} {
 	old := *aq
 	n := len(old)
 	x := old[n-1]
+	old[n-1] = nil
 	*aq = old[0 : n-1]
 	x.idx = -1
 	return x
@@ -243,6 +245,7 @@ func (iq *InsertQueue) Pop() interface{} {
 	old := *iq
 	n := len(old)
 	x := old[n-1]
+	old[n-1] = nil
 	*iq = old[0 : n-1]
 	x.idx = -1
 	x.queueId = NoQueue