diff --git a/js/background.js b/js/background.js
index 2144bc3..19c07ec 100644
--- a/js/background.js
+++ b/js/background.js
@@ -5,24 +5,43 @@ browser.sidebars.add({
     isBottom: true,
 })
 
-getFromStorage();
+getFromStorage().then(createSidebarItems);
 
 async function getFromStorage() {
     //get from storage
     let sidebaritems = await browser.storage.local.get("sidebaritems");
-    if (sidebaritems.sidebaritems == undefined) {
-    sidebaritems.sidebaritems = [];
-    }
+    console.log(sidebaritems);
+    return sidebaritems;
+}
+
+async function createSidebarItems(sidebaritems) {
     //create sidebar items
     for (let i = 0; i < sidebaritems.sidebaritems.length; i++) {
-    browser.sidebars.add({
-        title: sidebaritems.sidebaritems[i].title,
-        iconUrl: sidebaritems.sidebaritems[i].iconUrl,
-        webviewUrl: sidebaritems.sidebaritems[i].webviewUrl,
-    });
+        browser.sidebars.add({
+            title: sidebaritems.sidebaritems[i].title,
+            iconUrl: sidebaritems.sidebaritems[i].iconUrl,
+            webviewUrl: sidebaritems.sidebaritems[i].webviewUrl,
+        });
     }
 }
 
+async function removeSidebarItems(itemId)
+{
+    const item = await browser.sidebars.get(itemId);
+
+    //remove from storage
+    let storagearray = await getFromStorage();
+    let storageitems = storagearray.sidebaritems;
+
+    for (let i = 0; i < storageitems.length; i++) {
+        if (storageitems[i].webviewUrl == item.webviewUrl) {
+            storageitems.splice(i, 1);
+        }
+    }
+
+    browser.storage.local.set(storagearray);
+}
+
 browser.sidebars.onRemove.addListener((itemId) => {
-    console.log(itemId);
+    removeSidebarItems(itemId);
 })