diff --git a/tools/esp8266/html/index.html b/tools/esp8266/html/index.html
index c6db6ec9..790f81a4 100644
--- a/tools/esp8266/html/index.html
+++ b/tools/esp8266/html/index.html
@@ -9,6 +9,17 @@
     <body>
         <h1>AHOY</h1>
         <div id="content" class="content">
+            <SCRIPT>
+            function promptFunction() {
+                var Text = prompt("This project was started from https://www.mikrocontroller.net/topic/525778 this discussion.\n\n" + 
+                "The Hoymiles protocol was decrypted through the voluntary efforts of many participants. ahoy, among others, was developed based on this work. The project is licensed under an Open Source" + 
+                "License (https://www.gnu.de/documents/gpl-2.0.de.html) GNU General Public License version 2.\n\n" + 
+                "The software was developed to the best of our knowledge and belief. Nevertheless, no liability can be accepted for a malfunction or guarantee loss of the inverter.\n\n" + 
+                "Ahoy is freely available. If you paid money for the software, you probably got ripped off.\n\nPlease type in 'YeS', you are accept our Disclaim.", "");
+                if (Text != "YeS") promptFunction();
+            }
+            </SCRIPT>
+            
             <p>
                 <a href="/live">Visualization</a><br/>
                 <br/>
