diff --git a/manager.cpp b/manager.cpp
index 4d0ba96..91f728c 100644
--- a/manager.cpp
+++ b/manager.cpp
@@ -470,7 +470,8 @@ bool RepostManager::drop_posts_older_than(std::vector<AbstractPost> &posts, long
 }
 
 std::optional<AbstractPost> RepostManager::to_abstract_post(const vk::Post &post, int sourceIndex) {
-  return { AbstractPost(posts::SRC_VK, sourceIndex, post.id, post.date, post.text) };
+  if (post.text.empty()) return {};
+  else return { AbstractPost(posts::SRC_VK, sourceIndex, post.id, post.date, post.text) };
 }
 
 std::optional<AbstractPost> RepostManager::to_abstract_post(const td_api::message &post, int sourceIndex) {
@@ -486,6 +487,7 @@ std::vector<AbstractPost> RepostManager::to_abstract_posts(std::vector<vk::Post>
   std::vector<AbstractPost> result;
   result.reserve(posts.size());
   for (auto &post : posts) {
+    if (post.text.empty()) continue;
     result.emplace_back(posts::SRC_VK, sourceIndex, post.id, post.date, post.text);
   }
   return result;
@@ -555,6 +557,10 @@ bool RepostManager::recheck_vk_posts(std::function<void()> onDone) {
 }
 
 void RepostManager::repost(AbstractPost &post) {
+  if (post.text.length() == 0) {
+    spdlog::error("repost(): zero post length (post id {} date {})", post.id, post.date);
+    return;
+  }
   spdlog::debug("reposting (post length {})", post.text.length());
   std::string_view signature = posts::add_signature(post, m_appConfig);
   int signatureStart = post.text.length() - signature.length();