diff --git a/docs/docs/api/promise.props.md b/docs/docs/api/promise.props.md
index 35e9fa9cd..32d07711e 100644
--- a/docs/docs/api/promise.props.md
+++ b/docs/docs/api/promise.props.md
@@ -54,7 +54,7 @@ function directorySizeInfo(root) {
                 return stat;
             });
         }).then(_.flatten);
-    })(root).then(_);
+    })(root).then(_.chain);
 
     var smallest = stats.call("min", "size").call("pick", "size", "filePath").call("value");
     var largest = stats.call("max", "size").call("pick", "size", "filePath").call("value");
@@ -105,4 +105,4 @@ Promise.join(getPictures(), getComments(), getTweets(),
         (document.getElementsByTagName("head")[0] || document.getElementsByTagName("body")[0]).appendChild(dsq);
     })();
 </script>
-<noscript>Please enable JavaScript to view the <a href="https://disqus.com/?ref_noscript" rel="nofollow">comments powered by Disqus.</a></noscript>
\ No newline at end of file
+<noscript>Please enable JavaScript to view the <a href="https://disqus.com/?ref_noscript" rel="nofollow">comments powered by Disqus.</a></noscript>