diff --git a/index.js b/index.js
index <HASH>..<HASH> 100644
--- a/index.js
+++ b/index.js
@@ -1460,7 +1460,7 @@
   //. Function wrapper for [`fantasy-land/invert`][].
   //.
   //. ```javascript
-  //. invert(Sum(5))
+  //. > invert(Sum(5))
   //. Sum(-5)
   //. ```
   function invert(group) {
documentation: add missing ‘>’ on input line