diff --git a/index.html b/index.html
index 473028c1..836a2e9f 100644
--- a/index.html
+++ b/index.html
@@ -47,7 +47,7 @@
 
     <div id="configHeader"><b>Advanced settings:</b> [<a id="configToggleBtn" href="#">show</a>]</div>
     <div id="config">
-        <label for="seed">Seed:</label> <input id="seed" name="seed" value="30000"> <input id="random_seed" name="random_seed" type="checkbox"> <label for="random_seed">Random Image</label> <br/>
+        <label for="seed">Seed:</label> <input id="seed" name="seed" value="30000"> <input id="random_seed" name="random_seed" type="checkbox" checked> <label for="random_seed">Random Image</label> <br/>
         <label for="num_outputs">Number of outputs:</label> <select id="num_outputs" name="num_outputs" value="1"><option value="1" selected>1</option><option value="4">4</option></select><br/>
         <label for="width">Width:</label> <select id="width" name="width" value="512"><option value="128">128</option><option value="256">256</option><option value="512" selected>512</option><option value="768">768</option><option value="1024">1024</option></select><br/>
         <label for="height">Height:</label> <select id="height" name="height" value="512"><option value="128">128</option><option value="256">256</option><option value="512" selected>512</option><option value="768">768</option></select><br/>