diff --git a/torchtext/csrc/register_pybindings.cpp b/torchtext/csrc/register_pybindings.cpp
index 34e8da149e..80d91ee744 100644
--- a/torchtext/csrc/register_pybindings.cpp
+++ b/torchtext/csrc/register_pybindings.cpp
@@ -9,7 +9,7 @@
 #include <torch/script.h>
 #include <vectors.h> // @manual
 #include <vocab.h>   // @manual
-#include <vocab_factory.h>
+#include <vocab_factory.h> // @manual
 
 namespace torchtext {
 
diff --git a/torchtext/csrc/vocab_factory.h b/torchtext/csrc/vocab_factory.h
index 3cdb6692bb..03677817a8 100644
--- a/torchtext/csrc/vocab_factory.h
+++ b/torchtext/csrc/vocab_factory.h
@@ -1,5 +1,5 @@
 #include <pybind11/pybind11.h>
-#include <vocab.h>
+#include <vocab.h> // @manual
 
 namespace py = pybind11;