diff --git a/src/web/html/api.js b/src/web/html/api.js
index e92f326c9..6e63740db 100644
--- a/src/web/html/api.js
+++ b/src/web/html/api.js
@@ -103,7 +103,9 @@ function parseVersion(obj) {
 }
 
 function parseESP(obj) {
-    document.getElementById("esp_type").innerHTML="Board: " + obj["esp_type"];
+    document.getElementById("esp_type").append(
+        document.createTextNode("Board: " + obj["esp_type"])
+    );
 }
 
 function parseRssi(obj) {
diff --git a/src/web/html/includes/footer.html b/src/web/html/includes/footer.html
index 047481f1a..5a2b705b4 100644
--- a/src/web/html/includes/footer.html
+++ b/src/web/html/includes/footer.html
@@ -9,7 +9,7 @@
     <div class="right">
         <ul>
             <li>{#VERSION_GIT}</li>
-            <li><span id="esp_type"></span></li>
+            <li id="esp_type"></li>
             <li><a href="https://creativecommons.org/licenses/by-nc-sa/3.0/de" target="_blank" >CC BY-NC-SA 3.0</a></li>
         </ul>
     </div>
diff --git a/src/web/html/visualization.html b/src/web/html/visualization.html
index 213ded2c4..333bc718e 100644
--- a/src/web/html/visualization.html
+++ b/src/web/html/visualization.html
@@ -191,7 +191,7 @@
                 for(var i = obj.id + 1; i < ivEn.length; i++) {
                     if((i != ivEn.length) && ivEn[i]) {
                         last = false;
-                        getAjax("http://10.20.3.44/api/inverter/id/" + i, parseIv);
+                        getAjax("/api/inverter/id/" + i, parseIv);
                         break;
                     }
                 }