diff --git a/td/telegram/ContactsManager.cpp b/td/telegram/ContactsManager.cpp
index 8fbec712c..10a5e690b 100644
--- a/td/telegram/ContactsManager.cpp
+++ b/td/telegram/ContactsManager.cpp
@@ -48,6 +48,7 @@
 
 #include "td/utils/base64.h"
 #include "td/utils/buffer.h"
+#include "td/utils/port/Clocks.h"
 #include "td/utils/format.h"
 #include "td/utils/logging.h"
 #include "td/utils/misc.h"
@@ -2754,7 +2755,8 @@ class GetBroadcastStatsQuery : public Td::ResultHandler {
       flags |= telegram_api::stats_getBroadcastStats::DARK_MASK;
     }
     send_query(G()->net_query_creator().create(
-        telegram_api::stats_getBroadcastStats(flags, false /*ignored*/, std::move(input_channel), 0), dc_id));
+        telegram_api::stats_getBroadcastStats(flags, false /*ignored*/, std::move(input_channel), Clocks::tz_offset()),
+        dc_id));
   }
 
   void on_result(uint64 id, BufferSlice packet) override {
diff --git a/td/telegram/net/MtprotoHeader.cpp b/td/telegram/net/MtprotoHeader.cpp
index bd90bc4a4..5924fec16 100644
--- a/td/telegram/net/MtprotoHeader.cpp
+++ b/td/telegram/net/MtprotoHeader.cpp
@@ -8,10 +8,12 @@
 
 #include "td/telegram/JsonValue.h"
 #include "td/telegram/LanguagePackManager.h"
+#include "td/telegram/telegram_api.h"
 #include "td/telegram/Version.h"
 
 #include "td/tl/tl_object_store.h"
 
+#include "td/utils/port/Clocks.h"
 #include "td/utils/tl_helpers.h"
 
 namespace td {
@@ -37,7 +39,7 @@ class HeaderStorer {
     if (have_proxy) {
       flags |= 1 << 0;
     }
-    if (!options.parameters.empty()) {
+    if (!is_anonymous) {
       flags |= 1 << 1;
     }
     if (options.is_emulator) {
@@ -72,10 +74,29 @@ class HeaderStorer {
       store(Slice(options.proxy.server()), storer);
       store(options.proxy.port(), storer);
     }
-    if (!options.parameters.empty()) {
-      auto parameters_copy = options.parameters;
-      auto json_value = get_input_json_value(parameters_copy).move_as_ok();
+    if (!is_anonymous) {
+      telegram_api::object_ptr<telegram_api::JSONValue> json_value;
+      if (options.parameters.empty()) {
+        json_value = make_tl_object<telegram_api::jsonObject>(vector<tl_object_ptr<telegram_api::jsonObjectValue>>());
+      } else {
+        auto parameters_copy = options.parameters;
+        json_value = get_input_json_value(parameters_copy).move_as_ok();
+      }
       CHECK(json_value != nullptr);
+      if (json_value->get_id() == telegram_api::jsonObject::ID) {
+        auto &values = static_cast<telegram_api::jsonObject *>(json_value.get())->value_;
+        bool has_tz_offset = false;
+        for (auto &value : values) {
+          if (value->key_ == "tz_offset") {
+            has_tz_offset = true;
+            break;
+          }
+        }
+        if (!has_tz_offset) {
+          values.push_back(make_tl_object<telegram_api::jsonObjectValue>(
+              "tz_offset", make_tl_object<telegram_api::jsonNumber>(Clocks::tz_offset())));
+        }
+      }
       TlStoreBoxedUnknown<TlStoreObject>::store(json_value, storer);
     }
   }