diff --git a/cloud/blockstore/libs/storage/partition_nonrepl/part_nonrepl_migration_common_actor.h b/cloud/blockstore/libs/storage/partition_nonrepl/part_nonrepl_migration_common_actor.h
index dc930598503..34b60b0057b 100644
--- a/cloud/blockstore/libs/storage/partition_nonrepl/part_nonrepl_migration_common_actor.h
+++ b/cloud/blockstore/libs/storage/partition_nonrepl/part_nonrepl_migration_common_actor.h
@@ -65,8 +65,12 @@ class IMigrationOwner
 class TNonreplicatedPartitionMigrationCommonActor
     : public NActors::TActorBootstrapped<
           TNonreplicatedPartitionMigrationCommonActor>
+    , IPoisonPillHelperOwner
 {
 private:
+    using TBase = NActors::TActorBootstrapped<
+        TNonreplicatedPartitionMigrationCommonActor>;
+
     IMigrationOwner* const MigrationOwner = nullptr;
     const TStorageConfigPtr Config;
     const IProfileLogPtr ProfileLog;
@@ -131,6 +135,12 @@ class TNonreplicatedPartitionMigrationCommonActor
     // Called from the inheritor to get the next processing range.
     TBlockRange64 GetNextProcessingRange() const;
 
+    // IPoisonPillHelperOwner implementation
+    void Die(const NActors::TActorContext& ctx) override
+    {
+        TBase::Die(ctx);
+    }
+
 private:
     void ScheduleCountersUpdate(const NActors::TActorContext& ctx);
     void SendStats(const NActors::TActorContext& ctx);
diff --git a/cloud/storage/core/libs/actors/poison_pill_helper.cpp b/cloud/storage/core/libs/actors/poison_pill_helper.cpp
index acd1603b308..d4b0a436f6c 100644
--- a/cloud/storage/core/libs/actors/poison_pill_helper.cpp
+++ b/cloud/storage/core/libs/actors/poison_pill_helper.cpp
@@ -5,26 +5,10 @@
 using namespace NActors;
 
 namespace NCloud {
-namespace {
 
 ////////////////////////////////////////////////////////////////////////////////
 
-// Helps to call protected methods of IActor.
-class IActorHelper: public IActor
-{
-public:
-    static void CallDie(IActor* actor, const TActorContext& ctx)
-    {
-        Y_DEBUG_ABORT_UNLESS(actor);
-        static_cast<IActorHelper*>(actor)->Die(ctx);
-    }
-};
-
-}   // namespace
-
-////////////////////////////////////////////////////////////////////////////////
-
-TPoisonPillHelper::TPoisonPillHelper(NActors::IActor* owner)
+TPoisonPillHelper::TPoisonPillHelper(IPoisonPillHelperOwner* owner)
     : Owner(owner)
 {}
 
@@ -90,8 +74,7 @@ void TPoisonPillHelper::ReplyAndDie(const TActorContext& ctx)
         std::make_unique<TEvents::TEvPoisonTaken>(),
         0,   // flags
         Poisoner->Cookie);
-
-    IActorHelper::CallDie(Owner, ctx);
+    Owner->Die(ctx);
 }
 
 }   // namespace NCloud
diff --git a/cloud/storage/core/libs/actors/poison_pill_helper.h b/cloud/storage/core/libs/actors/poison_pill_helper.h
index 0e8fa8e5a7f..08c9f8e4afd 100644
--- a/cloud/storage/core/libs/actors/poison_pill_helper.h
+++ b/cloud/storage/core/libs/actors/poison_pill_helper.h
@@ -9,6 +9,14 @@ namespace NCloud {
 
 ////////////////////////////////////////////////////////////////////////////////
 
+// The owner of TPoisonPillHelper must implement this interface to make it
+// possible to kill the parent actor.
+class IPoisonPillHelperOwner
+{
+public:
+    virtual void Die(const NActors::TActorContext& ctx) = 0;
+};
+
 // Helps to handle the TEvPoisonPill for actor who owns other actors. The helper
 // sends TEvPoisonPill to all owned actors and waits for a response
 // TEvPoisonTaken from everyone. After that, it responds with the TEvPoisonTaken
@@ -22,12 +30,12 @@ class TPoisonPillHelper
         ui64 Cookie = 0;
     };
 
-    NActors::IActor* Owner;
+    IPoisonPillHelperOwner* Owner;
     TSet<NActors::TActorId> OwnedActors;
     std::optional<TPoisoner> Poisoner;
 
 public:
-    explicit TPoisonPillHelper(NActors::IActor* owner);
+    explicit TPoisonPillHelper(IPoisonPillHelperOwner* owner);
     virtual ~TPoisonPillHelper();
 
     void TakeOwnership(
diff --git a/cloud/storage/core/libs/actors/poison_pill_helper_ut.cpp b/cloud/storage/core/libs/actors/poison_pill_helper_ut.cpp
index 8900be531c8..2a93d41f2cf 100644
--- a/cloud/storage/core/libs/actors/poison_pill_helper_ut.cpp
+++ b/cloud/storage/core/libs/actors/poison_pill_helper_ut.cpp
@@ -87,9 +87,12 @@ class TChildActor: public TActor<TChildActor>
 
 ////////////////////////////////////////////////////////////////////////////////
 
-class TParentActor: public TActor<TParentActor>
+class TParentActor
+    : public TActor<TParentActor>
+    , IPoisonPillHelperOwner
 {
 private:
+    using TBase = TActor<TParentActor>;
     TPoisonPillHelper PoisonPillHelper;
     ui32 ChildCount;
 
@@ -100,6 +103,11 @@ class TParentActor: public TActor<TParentActor>
         , ChildCount(childCount)
     {}
 
+    void Die(const NActors::TActorContext& ctx) override
+    {
+        TBase::Die(ctx);
+    }
+
 private:
     void Main(TAutoPtr<IEventHandle>& ev)
     {