diff --git a/source/core/index-unique.txt b/source/core/index-unique.txt
index c3a628deefa..774f9c337ca 100644
--- a/source/core/index-unique.txt
+++ b/source/core/index-unique.txt
@@ -120,8 +120,8 @@ For example, consider a collection with the following documents:
 
 .. code-block:: javascript
 
-   { _id: 1, a: [ { loc: "A", qty: 5 }, { qty: 10 } ] }
-   { _id: 2, a: [ { loc: "A" }, { qty: 5 } ] }
+   { _id: 1, a: [ { loc: "A", qty: 5 }, { qty: 10 } ] },
+   { _id: 2, a: [ { loc: "A" }, { qty: 5 } ] },
    { _id: 3, a: [ { loc: "A", qty: 10 } ] }
 
 Create a unique compound multikey index on ``a.loc`` and ``a.qty``: