diff --git a/td/generate/scheme/td_api.tl b/td/generate/scheme/td_api.tl
index ede5431c..570e917d 100644
--- a/td/generate/scheme/td_api.tl
+++ b/td/generate/scheme/td_api.tl
@@ -216,8 +216,10 @@ pollOption text:string voter_count:int32 vote_percentage:int32 is_chosen:Bool is
 //@description A regular poll @allow_multiple_answers True, if multiple answer options can be chosen simultaneously
 pollTypeRegular allow_multiple_answers:Bool = PollType;
 
-//@description A poll in quiz mode, which has exactly one correct answer option and can be answered only once @correct_option_id 0-based identifier of the correct answer option; -1 for a yet unanswered poll
-pollTypeQuiz correct_option_id:int32 = PollType;
+//@description A poll in quiz mode, which has exactly one correct answer option and can be answered only once
+//@correct_option_id 0-based identifier of the correct answer option; -1 for a yet unanswered poll
+//@explanation Text shown after an incorrect answer has chosen; empty for a yet unanswered poll
+pollTypeQuiz correct_option_id:int32 explanation:formattedText = PollType;
 
 
 //@description Describes an animation file. The animation must be encoded in GIF or MPEG4 format @duration Duration of the animation, in seconds; as defined by the sender @width Width of the animation @height Height of the animation
diff --git a/td/generate/scheme/td_api.tlo b/td/generate/scheme/td_api.tlo
index c518f555..bbacd966 100644
Binary files a/td/generate/scheme/td_api.tlo and b/td/generate/scheme/td_api.tlo differ
diff --git a/td/telegram/MessageContent.cpp b/td/telegram/MessageContent.cpp
index 64e2afbf..a27843e1 100644
--- a/td/telegram/MessageContent.cpp
+++ b/td/telegram/MessageContent.cpp
@@ -1749,6 +1749,7 @@ static Result<InputMessageContent> create_input_message_content(
       bool allow_multiple_answers = false;
       bool is_quiz = false;
       int32 correct_option_id = -1;
+      FormattedText explanation;
       if (input_poll->type_ == nullptr) {
         return Status::Error(400, "Poll type must not be empty");
       }
@@ -1765,6 +1766,12 @@ static Result<InputMessageContent> create_input_message_content(
           if (correct_option_id < 0 || correct_option_id >= static_cast<int32>(input_poll->options_.size())) {
             return Status::Error(400, "Wrong correct option ID specified");
           }
+          auto r_explanation =
+              process_input_caption(td->contacts_manager_.get(), DialogId(), std::move(type->explanation_), is_bot);
+          if (r_explanation.is_error()) {
+            return r_explanation.move_as_error();
+          }
+          explanation = r_explanation.move_as_ok();
           break;
         }
         default:
@@ -1777,9 +1784,10 @@ static Result<InputMessageContent> create_input_message_content(
         close_date = 0;
       }
       bool is_closed = is_bot ? input_poll->is_closed_ : false;
-      content = make_unique<MessagePoll>(td->poll_manager_->create_poll(
-          std::move(input_poll->question_), std::move(input_poll->options_), input_poll->is_anonymous_,
-          allow_multiple_answers, is_quiz, correct_option_id, close_date, close_period, is_closed));
+      content = make_unique<MessagePoll>(
+          td->poll_manager_->create_poll(std::move(input_poll->question_), std::move(input_poll->options_),
+                                         input_poll->is_anonymous_, allow_multiple_answers, is_quiz, correct_option_id,
+                                         std::move(explanation), close_date, close_period, is_closed));
       break;
     }
     default:
diff --git a/td/telegram/MessageEntity.cpp b/td/telegram/MessageEntity.cpp
index 4524c8ce..79895c4b 100644
--- a/td/telegram/MessageEntity.cpp
+++ b/td/telegram/MessageEntity.cpp
@@ -3899,6 +3899,9 @@ void add_formatted_text_dependencies(Dependencies &dependencies, const Formatted
 }
 
 bool need_skip_bot_commands(const ContactsManager *contacts_manager, DialogId dialog_id, bool is_bot) {
+  if (!dialog_id.is_valid()) {
+    return true;
+  }
   if (is_bot) {
     return false;
   }
diff --git a/td/telegram/PollManager.cpp b/td/telegram/PollManager.cpp
index e9757a76..443d1a6c 100644
--- a/td/telegram/PollManager.cpp
+++ b/td/telegram/PollManager.cpp
@@ -15,6 +15,7 @@
 #include "td/telegram/logevent/LogEvent.h"
 #include "td/telegram/logevent/LogEventHelper.h"
 #include "td/telegram/MessagesManager.h"
+#include "td/telegram/misc.h"
 #include "td/telegram/net/NetActor.h"
 #include "td/telegram/PollId.hpp"
 #include "td/telegram/PollManager.hpp"
@@ -531,7 +532,8 @@ td_api::object_ptr<td_api::poll> PollManager::get_poll_object(PollId poll_id, co
   td_api::object_ptr<td_api::PollType> poll_type;
   if (poll->is_quiz) {
     auto correct_option_id = is_local_poll_id(poll_id) ? -1 : poll->correct_option_id;
-    poll_type = td_api::make_object<td_api::pollTypeQuiz>(correct_option_id);
+    poll_type = td_api::make_object<td_api::pollTypeQuiz>(
+        correct_option_id, get_formatted_text_object(is_local_poll_id(poll_id) ? FormattedText() : poll->explanation));
   } else {
     poll_type = td_api::make_object<td_api::pollTypeRegular>(poll->allow_multiple_answers);
   }
@@ -560,8 +562,8 @@ telegram_api::object_ptr<telegram_api::pollAnswer> PollManager::get_input_poll_o
 }
 
 PollId PollManager::create_poll(string &&question, vector<string> &&options, bool is_anonymous,
-                                bool allow_multiple_answers, bool is_quiz, int32 correct_option_id, int32 close_date,
-                                int32 close_period, bool is_closed) {
+                                bool allow_multiple_answers, bool is_quiz, int32 correct_option_id,
+                                FormattedText &&explanation, int32 close_date, int32 close_period, bool is_closed) {
   auto poll = make_unique<Poll>();
   poll->question = std::move(question);
   int pos = '0';
@@ -575,6 +577,7 @@ PollId PollManager::create_poll(string &&question, vector<string> &&options, boo
   poll->allow_multiple_answers = allow_multiple_answers;
   poll->is_quiz = is_quiz;
   poll->correct_option_id = correct_option_id;
+  poll->explanation = std::move(explanation);
   poll->close_date = close_date;
   poll->close_period = close_period;
   poll->is_closed = is_closed;
@@ -1196,13 +1199,18 @@ tl_object_ptr<telegram_api::InputMedia> PollManager::get_input_media(PollId poll
     CHECK(poll->correct_option_id >= 0);
     CHECK(static_cast<size_t>(poll->correct_option_id) < poll->options.size());
     correct_answers.push_back(BufferSlice(poll->options[poll->correct_option_id].data));
+
+    if (!poll->explanation.text.empty()) {
+      flags |= telegram_api::inputMediaPoll::SOLUTION_MASK;
+    }
   }
   return telegram_api::make_object<telegram_api::inputMediaPoll>(
       flags,
       telegram_api::make_object<telegram_api::poll>(
           0, poll_flags, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/, poll->question,
           transform(poll->options, get_input_poll_option), poll->close_period, poll->close_date),
-      std::move(correct_answers), string(), Auto());
+      std::move(correct_answers), poll->explanation.text,
+      get_input_message_entities(td_->contacts_manager_.get(), poll->explanation.entities, "get_input_media_poll"));
 }
 
 vector<PollManager::PollOption> PollManager::get_poll_options(
@@ -1384,14 +1392,33 @@ PollId PollManager::on_get_poll(PollId poll_id, tl_object_ptr<telegram_api::poll
       poll->total_voter_count = max_total_voter_count;
     }
   }
+
+  auto entities =
+      get_message_entities(td_->contacts_manager_.get(), std::move(poll_results->solution_entities_), "on_get_poll");
+  auto status = fix_formatted_text(poll_results->solution_, entities, true, true, true, false);
+  if (status.is_error()) {
+    if (!clean_input_string(poll_results->solution_)) {
+      poll_results->solution_.clear();
+    }
+    entities = find_entities(poll_results->solution_, true);
+  }
+  FormattedText explanation{std::move(poll_results->solution_), std::move(entities)};
+
   if (poll->is_quiz) {
     if (poll->correct_option_id != correct_option_id) {
       poll->correct_option_id = correct_option_id;
       is_changed = true;
     }
-  } else if (correct_option_id != -1) {
-    LOG(ERROR) << "Receive correct option " << correct_option_id << " in non-quiz " << poll_id;
+    if (poll->explanation != explanation && (!is_min || poll->is_closed)) {
+      poll->explanation = std::move(explanation);
+      is_changed = true;
+    }
+  } else {
+    if (correct_option_id != -1) {
+      LOG(ERROR) << "Receive correct option " << correct_option_id << " in non-quiz " << poll_id;
+    }
   }
+
   vector<UserId> recent_voter_user_ids;
   if (!is_bot) {
     for (auto &user_id_int : poll_results->recent_voters_) {
diff --git a/td/telegram/PollManager.h b/td/telegram/PollManager.h
index 63578824..15569329 100644
--- a/td/telegram/PollManager.h
+++ b/td/telegram/PollManager.h
@@ -7,6 +7,7 @@
 #pragma once
 
 #include "td/telegram/FullMessageId.h"
+#include "td/telegram/MessageEntity.h"
 #include "td/telegram/net/NetQuery.h"
 #include "td/telegram/PollId.h"
 #include "td/telegram/ReplyMarkup.h"
@@ -45,7 +46,8 @@ class PollManager : public Actor {
   static bool is_local_poll_id(PollId poll_id);
 
   PollId create_poll(string &&question, vector<string> &&options, bool is_anonymous, bool allow_multiple_answers,
-                     bool is_quiz, int32 correct_option_id, int32 close_date, int32 close_period, bool is_closed);
+                     bool is_quiz, int32 correct_option_id, FormattedText &&explanation, int32 close_date,
+                     int32 close_period, bool is_closed);
 
   void register_poll(PollId poll_id, FullMessageId full_message_id, const char *source);
 
@@ -106,6 +108,7 @@ class PollManager : public Actor {
     string question;
     vector<PollOption> options;
     vector<UserId> recent_voter_user_ids;
+    FormattedText explanation;
     int32 total_voter_count = 0;
     int32 correct_option_id = -1;
     int32 close_date = 0;
diff --git a/td/telegram/PollManager.hpp b/td/telegram/PollManager.hpp
index d54ff586..850f7c50 100644
--- a/td/telegram/PollManager.hpp
+++ b/td/telegram/PollManager.hpp
@@ -46,6 +46,7 @@ void PollManager::Poll::store(StorerT &storer) const {
   bool has_recent_voters = !recent_voter_user_ids.empty();
   bool has_close_date = close_date != 0;
   bool has_close_period = close_period != 0;
+  bool has_explanation = !explanation.text.empty();
   BEGIN_STORE_FLAGS();
   STORE_FLAG(is_closed);
   STORE_FLAG(is_public);
@@ -54,6 +55,7 @@ void PollManager::Poll::store(StorerT &storer) const {
   STORE_FLAG(has_recent_voters);
   STORE_FLAG(has_close_date);
   STORE_FLAG(has_close_period);
+  STORE_FLAG(has_explanation);
   END_STORE_FLAGS();
 
   store(question, storer);
@@ -71,6 +73,9 @@ void PollManager::Poll::store(StorerT &storer) const {
   if (has_close_period) {
     store(close_period, storer);
   }
+  if (has_explanation) {
+    store(explanation, storer);
+  }
 }
 
 template <class ParserT>
@@ -80,6 +85,7 @@ void PollManager::Poll::parse(ParserT &parser) {
   bool has_recent_voters;
   bool has_close_date;
   bool has_close_period;
+  bool has_explanation;
   BEGIN_PARSE_FLAGS();
   PARSE_FLAG(is_closed);
   PARSE_FLAG(is_public);
@@ -88,6 +94,7 @@ void PollManager::Poll::parse(ParserT &parser) {
   PARSE_FLAG(has_recent_voters);
   PARSE_FLAG(has_close_date);
   PARSE_FLAG(has_close_period);
+  PARSE_FLAG(has_explanation);
   END_PARSE_FLAGS();
   is_anonymous = !is_public;
 
@@ -109,6 +116,9 @@ void PollManager::Poll::parse(ParserT &parser) {
   if (has_close_period) {
     parse(close_period, parser);
   }
+  if (has_explanation) {
+    parse(explanation, parser);
+  }
 }
 
 template <class StorerT>
@@ -119,6 +129,7 @@ void PollManager::store_poll(PollId poll_id, StorerT &storer) const {
     CHECK(poll != nullptr);
     bool has_close_date = poll->close_date != 0;
     bool has_close_period = poll->close_period != 0;
+    bool has_explanation = !poll->explanation.text.empty();
     BEGIN_STORE_FLAGS();
     STORE_FLAG(poll->is_closed);
     STORE_FLAG(poll->is_anonymous);
@@ -126,6 +137,7 @@ void PollManager::store_poll(PollId poll_id, StorerT &storer) const {
     STORE_FLAG(poll->is_quiz);
     STORE_FLAG(has_close_date);
     STORE_FLAG(has_close_period);
+    STORE_FLAG(has_explanation);
     END_STORE_FLAGS();
     store(poll->question, storer);
     vector<string> options = transform(poll->options, [](const PollOption &option) { return option.text; });
@@ -139,6 +151,9 @@ void PollManager::store_poll(PollId poll_id, StorerT &storer) const {
     if (has_close_period) {
       store(poll->close_period, storer);
     }
+    if (has_explanation) {
+      store(poll->explanation, storer);
+    }
   }
 }
 
@@ -150,6 +165,7 @@ PollId PollManager::parse_poll(ParserT &parser) {
   if (is_local_poll_id(poll_id)) {
     string question;
     vector<string> options;
+    FormattedText explanation;
     int32 close_date = 0;
     int32 close_period = 0;
     bool is_closed = false;
@@ -158,6 +174,7 @@ PollId PollManager::parse_poll(ParserT &parser) {
     bool is_quiz = false;
     bool has_close_date = false;
     bool has_close_period = false;
+    bool has_explanation = false;
     int32 correct_option_id = -1;
 
     if (parser.version() >= static_cast<int32>(Version::SupportPolls2_0)) {
@@ -168,6 +185,7 @@ PollId PollManager::parse_poll(ParserT &parser) {
       PARSE_FLAG(is_quiz);
       PARSE_FLAG(has_close_date);
       PARSE_FLAG(has_close_period);
+      PARSE_FLAG(has_explanation);
       END_PARSE_FLAGS();
     }
     parse(question, parser);
@@ -184,11 +202,14 @@ PollId PollManager::parse_poll(ParserT &parser) {
     if (has_close_period) {
       parse(close_period, parser);
     }
+    if (has_explanation) {
+      parse(explanation, parser);
+    }
     if (parser.get_error() != nullptr) {
       return PollId();
     }
     return create_poll(std::move(question), std::move(options), is_anonymous, allow_multiple_answers, is_quiz,
-                       correct_option_id, close_date, close_period, is_closed);
+                       correct_option_id, std::move(explanation), close_date, close_period, is_closed);
   }
 
   auto poll = get_poll_force(poll_id);
diff --git a/td/telegram/cli.cpp b/td/telegram/cli.cpp
index 867b0dae..a31a79ad 100644
--- a/td/telegram/cli.cpp
+++ b/td/telegram/cli.cpp
@@ -3227,7 +3227,8 @@ class CliClient final : public Actor {
 
       td_api::object_ptr<td_api::PollType> poll_type;
       if (op == "squiz") {
-        poll_type = td_api::make_object<td_api::pollTypeQuiz>(narrow_cast<int32>(options.size() - 1));
+        poll_type = td_api::make_object<td_api::pollTypeQuiz>(narrow_cast<int32>(options.size() - 1),
+                                                              as_formatted_text("_te*st*_"));
       } else {
         poll_type = td_api::make_object<td_api::pollTypeRegular>(op == "spollm");
       }