diff --git a/sd-card/html/graph.html b/sd-card/html/graph.html
index cc5e20ac..88a19826 100644
--- a/sd-card/html/graph.html
+++ b/sd-card/html/graph.html
@@ -16,7 +16,7 @@ function run() {
 </head>
 <body>
 <div id='chart'></div>
-<button click="document.getElementById('editor').hidden = false; this.hidden = true;" >Editor</button>
+<button onclick="document.getElementById('editor').hidden = false; this.hidden = true;" >Editor</button>
 <div id='editor' hidden='true'>
 <textarea id="cnsl">
 fetch('/fileserver/log/message/log_2022-10-15.txt')
