diff --git a/tdutils/td/utils/AsyncFileLog.cpp b/tdutils/td/utils/AsyncFileLog.cpp
index 575333745..35b93aaef 100644
--- a/tdutils/td/utils/AsyncFileLog.cpp
+++ b/tdutils/td/utils/AsyncFileLog.cpp
@@ -49,7 +49,12 @@ Status AsyncFileLog::init(string path, int64 rotate_threshold, bool redirect_std
           if (!Stderr().empty() && redirect_stderr) {
             fd.get_native_fd().duplicate(Stderr().get_native_fd()).ignore();
           }
-          size = 0;
+          auto r_size = fd.get_size();
+          if (r_fd.is_error()) {
+            process_fatal_error(PSLICE() << "Failed to get log size: " << r_fd.error() << " in " << __FILE__ << " at "
+                                         << __LINE__ << '\n');
+          }
+          size = r_size.move_as_ok();
         };
         auto append = [&](CSlice slice) {
           if (size > rotate_threshold) {
diff --git a/tdutils/td/utils/FileLog.cpp b/tdutils/td/utils/FileLog.cpp
index a16731442..23b575f7f 100644
--- a/tdutils/td/utils/FileLog.cpp
+++ b/tdutils/td/utils/FileLog.cpp
@@ -128,7 +128,12 @@ void FileLog::do_after_rotation() {
   if (!Stderr().empty() && redirect_stderr_) {
     fd_.get_native_fd().duplicate(Stderr().get_native_fd()).ignore();
   }
-  size_ = 0;
+  auto r_size = fd_.get_size();
+  if (r_fd.is_error()) {
+    process_fatal_error(PSLICE() << "Failed to get log size: " << r_fd.error() << " in " << __FILE__ << " at "
+                                 << __LINE__ << '\n');
+  }
+  size_ = r_size.move_as_ok();
 }
 
 Result<unique_ptr<LogInterface>> FileLog::create(string path, int64 rotate_threshold, bool redirect_stderr) {