diff --git a/public/trivabble.js b/public/trivabble.js
index 2057c09..65b8580 100644
--- a/public/trivabble.js
+++ b/public/trivabble.js
@@ -138,7 +138,13 @@
                 (type === "number") ||
                 (type === "object") ||
                 (type === "string")) {
-                localStorage.setItem("trivabble" + key, value);
+                if (Object.prototype.hasOwnProperty.call(Conf, key) && (Conf[key] === value)) {
+                    if (Object.prototype.hasOwnProperty.call(localStorage, "trivabble" + key)) {
+                        delete localStorage["trivabble" + key];
+                    }
+                } else {
+                    localStorage.setItem("trivabble" + key, value);
+                }
             } else {
                 console.error("Unsupported type");
             }