diff --git a/build.html b/build.html
index 985b8f04c..3c4d5541e 100644
--- a/build.html
+++ b/build.html
@@ -385,12 +385,15 @@ function onOptionsChanged() {
   }
 
   var low_memory = false;
-  if (os_linux || os_freebsd || os_openbsd || os_netbsd) {
+  if (os_linux || os_freebsd || os_netbsd) {
     low_memory = document.getElementById('buildLowMemoryCheckbox').checked;
     document.getElementById('buildLowMemoryText').innerHTML = 'I have less than ' + (use_clang ? '1.5' : '3.5') +' GB of RAM.' +
             (low_memory ? ' Now you will need only ' + (use_clang ? '0.5' : '1') +' GB of RAM to build TDLib.' : '');
     document.getElementById('buildLowMemoryDiv').style.display = 'block';
   } else {
+    if (os_openbsd) {
+      low_memory = true;
+    }
     document.getElementById('buildLowMemoryDiv').style.display = 'none';
   }
 
diff --git a/td/telegram/MessageContentType.h b/td/telegram/MessageContentType.h
index 954a5a67c..a01b9d3ea 100644
--- a/td/telegram/MessageContentType.h
+++ b/td/telegram/MessageContentType.h
@@ -70,4 +70,10 @@ bool is_service_message_content(MessageContentType content_type);
 
 bool can_have_message_content_caption(MessageContentType content_type);
 
+struct MessageContentTypeHash {
+  std::size_t operator()(MessageContentType content_type) const {
+    return std::hash<int32>()(static_cast<int32>(content_type));
+  }
+};
+
 }  // namespace td
diff --git a/td/telegram/MessagesManager.cpp b/td/telegram/MessagesManager.cpp
index 553a03de3..1e5d2894c 100644
--- a/td/telegram/MessagesManager.cpp
+++ b/td/telegram/MessagesManager.cpp
@@ -1922,7 +1922,7 @@ class SearchMessagesQuery : public Td::ResultHandler {
       send_query(G()->net_query_creator().create(
           telegram_api::messages_getUnreadMentions(std::move(input_peer), from_message_id.get_server_message_id().get(),
                                                    offset, limit, std::numeric_limits<int32>::max(), 0)));
-    } else if (top_thread_message_id.is_valid() && !sender_dialog_id.is_valid() &&
+    } else if (top_thread_message_id.is_valid() && query.empty() && !sender_dialog_id.is_valid() &&
                filter == MessageSearchFilter::Empty) {
       handle_errors_ = dialog_id.get_type() != DialogType::Channel ||
                        td->contacts_manager_->get_channel_type(dialog_id.get_channel_id()) != ChannelType::Broadcast;
@@ -23227,7 +23227,7 @@ Result<vector<MessageId>> MessagesManager::send_message_group(
   TRY_RESULT(message_send_options, process_message_send_options(dialog_id, std::move(options)));
 
   vector<std::pair<unique_ptr<MessageContent>, int32>> message_contents;
-  std::unordered_set<MessageContentType> message_content_types;
+  std::unordered_set<MessageContentType, MessageContentTypeHash> message_content_types;
   for (auto &input_message_content : input_message_contents) {
     TRY_RESULT(message_content, process_input_message_content(dialog_id, std::move(input_message_content)));
     TRY_STATUS(can_use_message_send_options(message_send_options, message_content));
diff --git a/tdutils/test/misc.cpp b/tdutils/test/misc.cpp
index a3def7ed2..7237ad1f6 100644
--- a/tdutils/test/misc.cpp
+++ b/tdutils/test/misc.cpp
@@ -52,7 +52,7 @@
 using namespace td;
 
 struct CheckExitGuard {
-  explicit CheckExitGuard(bool expected_value): expected_value_(expected_value) {
+  explicit CheckExitGuard(bool expected_value) : expected_value_(expected_value) {
   }
   CheckExitGuard(CheckExitGuard &&) = delete;
   CheckExitGuard &operator=(CheckExitGuard &&) = delete;