diff --git a/td/telegram/Photo.cpp b/td/telegram/Photo.cpp
index 4001e2330..090af902a 100644
--- a/td/telegram/Photo.cpp
+++ b/td/telegram/Photo.cpp
@@ -402,13 +402,13 @@ Variant<PhotoSize, string> get_photo_size(FileManager *file_manager, PhotoSizeSo
           LOG(ERROR) << "Receive unexpected JPEG minithumbnail in photo of format " << format;
         }
         if (G()->shared_config().get_option_boolean("disable_minithumbnails")) {
-          return "";
+          return std::string("");
         } else {
           return std::move(res);
         }
       }
       if (G()->shared_config().get_option_boolean("disable_minithumbnails")) {
-        return "";
+        return std::string("");
       } else {
         return size->bytes_.as_slice().str();
       }
diff --git a/td/telegram/VideosManager.cpp b/td/telegram/VideosManager.cpp
index c78049c85..640e54b91 100644
--- a/td/telegram/VideosManager.cpp
+++ b/td/telegram/VideosManager.cpp
@@ -9,6 +9,7 @@
 #include "td/telegram/secret_api.h"
 #include "td/telegram/td_api.h"
 #include "td/telegram/telegram_api.h"
+#include "td/telegram/ConfigShared.h"
 
 #include "td/telegram/files/FileManager.h"
 #include "td/telegram/Td.h"