diff --git a/include/spdlog/sinks/rotating_file_sink-inl.h b/include/spdlog/sinks/rotating_file_sink-inl.h
index 2c003959..7401e4f2 100644
--- a/include/spdlog/sinks/rotating_file_sink-inl.h
+++ b/include/spdlog/sinks/rotating_file_sink-inl.h
@@ -36,6 +36,7 @@ SPDLOG_INLINE rotating_file_sink<Mutex>::rotating_file_sink(
     if (rotate_on_open && current_size_ > 0)
     {
         rotate_();
+        current_size_ = 0;
     }
 }