diff --git a/README.md b/README.md
index 3409c68ccd..5e4bdd339c 100644
--- a/README.md
+++ b/README.md
@@ -907,13 +907,15 @@
       return name;
     })();
 
-    // good
+    // good (guards against the function becoming an argument when two files with IIFEs are concatenated)
     ;(function() {
       var name = 'Skywalker';
       return name;
     })();
     ```
 
+    [Read more](http://stackoverflow.com/a/7365214/1712802).
+
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