diff --git a/tool/perf-test.html b/tool/perf-test.html
index fa5de999..451c1b8a 100644
--- a/tool/perf-test.html
+++ b/tool/perf-test.html
@@ -90,11 +90,12 @@
             <option value="ace/theme/monokai">Monokai</option>
             <option value="ace/theme/pastel_on_dark">Pastel on dark</option>
             <option value="ace/theme/solarized_dark">Solarized Dark</option>
-            <option value="ace/theme/twilight">Twilight</option>
+            <option value="ace/theme/terminal">Terminal</option>
             <option value="ace/theme/tomorrow_night">Tomorrow Night</option>
             <option value="ace/theme/tomorrow_night_blue">Tomorrow Night Blue</option>
             <option value="ace/theme/tomorrow_night_bright">Tomorrow Night Bright</option>
             <option value="ace/theme/tomorrow_night_eighties">Tomorrow Night 80s</option>
+            <option value="ace/theme/twilight">Twilight</option>
             <option value="ace/theme/vibrant_ink">Vibrant Ink</option>
           </optgroup>
         </select>