diff --git a/benchmark/bench_crypto.cpp b/benchmark/bench_crypto.cpp
index 5a88d1e59..e76c2a8de 100644
--- a/benchmark/bench_crypto.cpp
+++ b/benchmark/bench_crypto.cpp
@@ -6,6 +6,7 @@
 //
 #include "td/utils/benchmark.h"
 
+#include "td/utils/common.h"
 #include "td/utils/crypto.h"
 #include "td/utils/logging.h"
 #include "td/utils/port/thread.h"
@@ -185,7 +186,7 @@ class AesCtrOpenSSLBench : public td::Benchmark {
 
   void run(int n) override {
     EVP_CIPHER_CTX *ctx = EVP_CIPHER_CTX_new();
-    EVP_EncryptInit_ex(ctx, EVP_aes_256_ctr(), NULL, key.raw, iv.raw);
+    EVP_EncryptInit_ex(ctx, EVP_aes_256_ctr(), nullptr, key.raw, iv.raw);
 
     td::MutableSlice data_slice(data, DATA_SIZE);
     td::AesCtrState state;
diff --git a/td/telegram/DialogAction.h b/td/telegram/DialogAction.h
index 369e07818..4be76e03d 100644
--- a/td/telegram/DialogAction.h
+++ b/td/telegram/DialogAction.h
@@ -13,7 +13,6 @@
 
 #include "td/utils/common.h"
 #include "td/utils/StringBuilder.h"
-#include "td/utils/tl_helpers.h"
 
 namespace td {
 
diff --git a/td/telegram/UpdatesManager.cpp b/td/telegram/UpdatesManager.cpp
index a2b7de054..3d291d4c2 100644
--- a/td/telegram/UpdatesManager.cpp
+++ b/td/telegram/UpdatesManager.cpp
@@ -6,6 +6,7 @@
 //
 #include "td/telegram/UpdatesManager.h"
 
+#include "td/telegram/td_api.h"
 #include "td/telegram/telegram_api.hpp"
 
 #include "td/telegram/AnimationsManager.h"
diff --git a/td/telegram/UpdatesManager.h b/td/telegram/UpdatesManager.h
index c81ce6c8b..53c27d45b 100644
--- a/td/telegram/UpdatesManager.h
+++ b/td/telegram/UpdatesManager.h
@@ -10,7 +10,6 @@
 #include "td/telegram/ChatId.h"
 #include "td/telegram/DialogId.h"
 #include "td/telegram/PtsManager.h"
-#include "td/telegram/td_api.h"
 #include "td/telegram/telegram_api.h"
 #include "td/telegram/UserId.h"