diff --git a/src/ts/index.ts b/src/ts/index.ts
index 11e8290..4b346b2 100644
--- a/src/ts/index.ts
+++ b/src/ts/index.ts
@@ -281,10 +281,13 @@ export default class CookieNotice {
     acceptCookie(cookieName: string) {
         const cookieOptions = this.getCookie(cookieName);
         this.setCookieStatus(cookieName, CookieStatus.true, cookieOptions);
-        const cnSwitch = document.getElementById(`${cookieName}-switch`) as HTMLInputElement;
-        const cnSwitchInput = cnSwitch!.querySelector("input") as HTMLInputElement;
-        cnSwitchInput!.checked = true;
-        cnSwitch!.ariaChecked = "true";
+        const cnSwitch = document.getElementById(`${cookieName}-switch`) as HTMLInputElement | null;
+        const cnSwitchInput = cnSwitch?.querySelector("input") as HTMLInputElement | null;
+        if (!cnSwitch || !cnSwitchInput) {
+            return;
+        }
+        cnSwitchInput.checked = true;
+        cnSwitch.ariaChecked = "true";
     }
 
     /**
@@ -301,10 +304,13 @@ export default class CookieNotice {
     denyCookie(cookieName: string) {
         const cookieOptions = this.getCookie(cookieName);
         this.setCookieStatus(cookieName, CookieStatus.false, cookieOptions);
-        const cnSwitch = document.getElementById(`${cookieName}-switch`) as HTMLInputElement;
-        const cnSwitchInput = cnSwitch!.querySelector("input") as HTMLInputElement;
-        cnSwitchInput!.checked = false;
-        cnSwitch!.ariaChecked = "false";
+        const cnSwitch = document.getElementById(`${cookieName}-switch`) as HTMLInputElement | null;
+        const cnSwitchInput = cnSwitch?.querySelector("input") as HTMLInputElement | null;
+        if (!cnSwitch || !cnSwitchInput) {
+            return;
+        }
+        cnSwitchInput.checked = false;
+        cnSwitch.ariaChecked = "false";
     }
 
     /**