diff --git a/scripts/classes/ProcessInputForm/classProcessInputForm.ts b/scripts/classes/ProcessInputForm/classProcessInputForm.ts
index 84a7cb6..b0f3744 100644
--- a/scripts/classes/ProcessInputForm/classProcessInputForm.ts
+++ b/scripts/classes/ProcessInputForm/classProcessInputForm.ts
@@ -57,7 +57,11 @@ export default class classProcessInputForm {
    * @param {string} value Value that we modify with
    */
   private static setInnerHTML(elementId: string, value: string) {
-    window.document.getElementById(elementId).innerHTML = value;
+    const element = window.document.getElementById(elementId);
+
+    if (element && value) {
+      element.innerHTML = value;
+    }
   }
 
   /**
diff --git a/scripts/classes/ValidText/classValidText.ts b/scripts/classes/ValidText/classValidText.ts
index f17d34c..511a63a 100644
--- a/scripts/classes/ValidText/classValidText.ts
+++ b/scripts/classes/ValidText/classValidText.ts
@@ -23,9 +23,9 @@ export default class classValidText {
       bilInformasjon !== undefined &&
       bilInformasjon.length === 7
     ) {
-      submitButton.removeAttribute("disabled");
+      submitButton?.removeAttribute("disabled");
     } else {
-      submitButton.setAttribute("disabled", "true");
+      submitButton?.setAttribute("disabled", "true");
     }
   };
 }