diff --git a/doc/sandbox.mdwn b/doc/sandbox.mdwn
index 9dd99d6f1..a9d72086e 100644
--- a/doc/sandbox.mdwn
+++ b/doc/sandbox.mdwn
@@ -81,7 +81,7 @@ Bulleted list
      * three
        * four
         * five
-
+          * six
 ----
 
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