diff --git a/runtime/autoload/README.txt b/runtime/autoload/README.txt
index 0381995..0c7fcfe 100644
--- a/runtime/autoload/README.txt
+++ b/runtime/autoload/README.txt
@@ -4,3 +4,6 @@
 automatically when the function is invoked.  See ":help autoload".
 
 gzip.vim	for editing compressed files
+
+Occult completion files:
+ccomplete.vim	C