diff --git a/spec/v2/index.bs b/spec/v2/index.bs
index 00b5547..e41320e 100644
--- a/spec/v2/index.bs
+++ b/spec/v2/index.bs
@@ -1300,7 +1300,7 @@ DeclaredUnit is the enumeration of accepted declared units with values
 :: for square meter, the Derived Unit from SI Base Unit `metre`
 
 : <dfn>piece</dfn>
-:: For a piece, a unit of product
+:: for a piece, a unit of product
 
 </dl>