diff --git a/benchmark/hashmap_build.cpp b/benchmark/hashmap_build.cpp
index be58967de..479761728 100644
--- a/benchmark/hashmap_build.cpp
+++ b/benchmark/hashmap_build.cpp
@@ -7,6 +7,7 @@
 #include "td/utils/FlatHashMap.h"
 
 #include <absl/container/flat_hash_map.h>
+#include <array>
 #include <folly/container/F14Map.h>
 #include <map>
 #include <unordered_map>
diff --git a/tdutils/td/utils/FlatHashMap.h b/tdutils/td/utils/FlatHashMap.h
index 85eb2f95f..e30df0b32 100644
--- a/tdutils/td/utils/FlatHashMap.h
+++ b/tdutils/td/utils/FlatHashMap.h
@@ -14,7 +14,6 @@
 #include <initializer_list>
 #include <iterator>
 #include <new>
-#include <unordered_map>
 #include <utility>
 
 namespace td {
@@ -585,10 +584,8 @@ using FlatHashSetImpl = FlatHashTable<SetNode<KeyT>, HashT, EqT>;
 
 template <class KeyT, class ValueT, class HashT = std::hash<KeyT>, class EqT = std::equal_to<KeyT>>
 using FlatHashMap = FlatHashMapImpl<KeyT, ValueT, HashT, EqT>;
-//using FlatHashMap = std::unordered_map<KeyT, ValueT, HashT, EqT>;
 
 template <class KeyT, class HashT = std::hash<KeyT>, class EqT = std::equal_to<KeyT>>
 using FlatHashSet = FlatHashSetImpl<KeyT, HashT, EqT>;
-//using FlatHashSet = std::unordered_set<KeyT, HashT, EqT>;
 
 }  // namespace td
diff --git a/tdutils/test/HashSet.cpp b/tdutils/test/HashSet.cpp
index 773944ac5..f6c19caac 100644
--- a/tdutils/test/HashSet.cpp
+++ b/tdutils/test/HashSet.cpp
@@ -25,15 +25,15 @@ static auto extract_kv(const T &reference) {
 
 TEST(FlatHashMap, basic) {
   {
-      td::FlatHashSet<int> s;
-      s.insert(5);
-      for (auto x : s) {
-      }
-      int N = 100000;
-      for (int i = 0; i < 10000000; i++) {
-        s.insert((i + N/2)%N);
-        s.erase(i%N);
-      }
+    td::FlatHashSet<int> s;
+    s.insert(5);
+    for (auto x : s) {
+    }
+    int N = 100000;
+    for (int i = 0; i < 10000000; i++) {
+      s.insert((i + N / 2) % N);
+      s.erase(i % N);
+    }
   }
   {
     td::FlatHashMap<int, int> map;
diff --git a/tdutils/test/hashset_benchmark.cpp b/tdutils/test/hashset_benchmark.cpp
index 714726eb4..6fe486bd7 100644
--- a/tdutils/test/hashset_benchmark.cpp
+++ b/tdutils/test/hashset_benchmark.cpp
@@ -248,7 +248,7 @@ static void BM_emplace_same(benchmark::State &state) {
 
   while (state.KeepRunningBatch(BATCH_SIZE)) {
     for (size_t i = 0; i < BATCH_SIZE; i++) {
-      benchmark::DoNotOptimize(table.emplace(key + (i & 15) * 100 , 43784932));
+      benchmark::DoNotOptimize(table.emplace(key + (i & 15) * 100, 43784932));
     }
   }
 }
@@ -383,7 +383,10 @@ static void BM_remove_if_slow(benchmark::State &state) {
   auto first_key = table.begin()->first;
   {
     size_t cnt = 0;
-    td::table_remove_if(table, [&cnt](auto &) { cnt += 2; return cnt <= N; });
+    td::table_remove_if(table, [&cnt](auto &) {
+      cnt += 2;
+      return cnt <= N;
+    });
   }
   while (state.KeepRunningBatch(BATCH_SIZE)) {
     for (size_t i = 0; i < BATCH_SIZE; i++) {