diff --git a/doc/index.rst b/doc/index.rst
index 1e9f6922c7..47eca35b11 100644
--- a/doc/index.rst
+++ b/doc/index.rst
@@ -144,7 +144,7 @@ Version
 .. autoclass:: VersionSet
 
 
-Index, and CommentaryIndex
+Index
 --------------------------
 
 .. autoclass:: Index
@@ -155,6 +155,4 @@ Index, and CommentaryIndex
 
 .. autoclass:: IndexSet
 
-.. autoclass:: CommentaryIndex
-