diff --git a/lldb/www/formats.html b/lldb/www/formats.html
index b40dd9740aae..71463dce563d 100755
--- a/lldb/www/formats.html
+++ b/lldb/www/formats.html
@@ -99,6 +99,7 @@
                     <tr valign=top><td><b>thread.queue</b></td><td>The queue name of the thread if the target OS supports dispatch queues</td></tr>
                     <tr valign=top><td><b>thread.stop-reason</b></td><td>A textual reason each thread stopped</td></tr>
                     <tr valign=top><td><b>thread.return-value</b></td><td>The return value of the latest step operation (currently only for step-out.)</td></tr>
+                    <tr valign=top><td><b>thread.completed-expression</b></td><td>The expression result for a thread that just finished an interrupted expression evaluation.</td></tr>
                     <tr valign=top><td><b>target.arch</b></td><td>The architecture of the current target</td></tr>
                     <tr valign=top><td><b>target.script:<i>python_func</i></b></td><td>Use a Python function to generate a piece of textual output</td></tr>
                     <tr valign=top><td><b>process.script:<i>python_func</i></b></td><td>Use a Python function to generate a piece of textual output</td></tr>