diff --git a/files/en-us/web/javascript/reference/global_objects/regexp/exec/index.html b/files/en-us/web/javascript/reference/global_objects/regexp/exec/index.html
index 22034c7e8939792..166a1d692eaed22 100644
--- a/files/en-us/web/javascript/reference/global_objects/regexp/exec/index.html
+++ b/files/en-us/web/javascript/reference/global_objects/regexp/exec/index.html
@@ -184,6 +184,9 @@ <h3 id="Finding_successive_matches">Finding successive matches</h3>
 
   <p>Also, be sure that the global flag ("<code>g</code>") is set, or it will also cause
     an infinite loop.</p>
+
+  <p>In addition, when matching zero-length characters (e.g. <code>/^/gm</code>),
+    <code>++regexp.lastIndex</code> can be used to avoid infinite loops.</p>
 </div>
 
 <h3 id="Using_exec_with_RegExp_literals">Using exec() with RegExp literals</h3>