diff --git a/doc/rawapi.txt b/doc/rawapi.txt
index f5f80fad..32ff63c7 100644
--- a/doc/rawapi.txt
+++ b/doc/rawapi.txt
@@ -38,6 +38,7 @@ communicate with this main thread through message passing.
       - netbuf.h
       - netdb.h
       - netifapi.h
+      - pppapi.h
       - sockets.h
       - sys.h