diff --git a/source/reference/operator/centerSphere.txt b/source/reference/operator/centerSphere.txt
index 10fda510217..40354013a30 100644
--- a/source/reference/operator/centerSphere.txt
+++ b/source/reference/operator/centerSphere.txt
@@ -28,6 +28,6 @@ $centerSphere
 
    .. code-block:: javascript
 
-      db.collection.find( { loc: { $within: { $centerSphere: { [88,30], 10 /* miles */ / 3959 /* miles */ } } } } )
+      db.collection.find( { loc: { $within: { $centerSphere: [ [88,30], 10 /* miles */ / 3959 /* miles */ ] } } } )
 
    .. include:: /includes/note-geospatial-index-must-exist.rst