diff --git a/libos/include/os/File.h b/libos/include/os/File.h
index ac27f165..ccbd8061 100644
--- a/libos/include/os/File.h
+++ b/libos/include/os/File.h
@@ -191,6 +191,9 @@ namespace os
          */
         void rewind();
 
+        /**
+         * @brief Buffering modes for a File.
+         */
         enum BufferingMode
         {
             NotBuffered = _IONBF,