diff --git a/lib/api/encodeSummary.js b/lib/api/encodeSummary.js
index f1a7d971f..0d66ded49 100644
--- a/lib/api/encodeSummary.js
+++ b/lib/api/encodeSummary.js
@@ -10,7 +10,7 @@ var encodeSummaryArticle = require('../json/encodeSummaryArticle');
 function encodeSummary(output, summary) {
     var result = {
         /**
-            Iterate over the summary
+            Iterate over the summary, it stops when the "iter" returns false
 
             @param {Function} iter
         */