diff --git a/docs/index.rst b/docs/index.rst
index c4b4c8f..04d0409 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -26,6 +26,6 @@ Contents:
    assemblage
    marlin
 
-.. index:: history, license, bom, marlin, assembling, flybackboard
+.. index:: history, license, bom, marlin, assemblage, flybackboard