diff --git a/td/telegram/files/FileManager.cpp b/td/telegram/files/FileManager.cpp
index 67cadce8..134d29f5 100644
--- a/td/telegram/files/FileManager.cpp
+++ b/td/telegram/files/FileManager.cpp
@@ -3696,19 +3696,19 @@ void FileManager::hangup() {
 }
 
 void FileManager::memory_cleanup() {
-  empty_file_ids_.clear();
+  if (file_id_info_.size() > 1000 && empty_file_ids_.size() < 200) {
+    empty_file_ids_.clear();
 
-  if (file_id_info_.size() > 1000) {
-    for (unsigned int i = 1; i < file_id_info_.size() - 1000; i++) {
-      empty_file_ids_.push_back(i);
-    }
-    
     while (!queries_container_.empty()) {
       auto ids = queries_container_.ids();
       for (auto id : ids) {
         on_error(id, Status::Error(500, "Request aborted"));
       }
     }
+    
+    for (long unsigned int i = file_id_info_.size(); i > 0; i--) {
+      empty_file_ids_.push_back((int32) i);
+    }
   }
 }