diff --git a/tdactor/td/actor/Timeout.cpp b/tdactor/td/actor/Timeout.cpp
index 6a8fd1061..fa2e5ffff 100644
--- a/tdactor/td/actor/Timeout.cpp
+++ b/tdactor/td/actor/Timeout.cpp
@@ -82,11 +82,15 @@ void MultiTimeout::timeout_expired() {
   while (!timeout_queue_.empty() && timeout_queue_.top_key() < now) {
     int64 key = static_cast<Item *>(timeout_queue_.pop())->key;
     items_.erase(Item(key));
-    callback_(data_, key);
+    expired_.push_back(key);
   }
   if (!items_.empty()) {
     update_timeout();
   }
+  for (auto key : expired_) {
+    callback_(data_, key);
+  }
+  expired_.clear();
 }
 
 }  // namespace td
diff --git a/tdactor/td/actor/Timeout.h b/tdactor/td/actor/Timeout.h
index 3de82931f..a3a9ba191 100644
--- a/tdactor/td/actor/Timeout.h
+++ b/tdactor/td/actor/Timeout.h
@@ -117,6 +117,7 @@ class MultiTimeout final : public Actor {
 
   KHeap<double> timeout_queue_;
   std::set<Item> items_;
+  std::vector<int64> expired_;
 
   void update_timeout();