diff --git a/web/src/pages/Settings.vue b/web/src/pages/Settings.vue
index bd5d478..6efb122 100644
--- a/web/src/pages/Settings.vue
+++ b/web/src/pages/Settings.vue
@@ -6,24 +6,28 @@ import { TITLE } from "../store/mutation-types"
 export default defineComponent({
     data() {
         return {
-            transactionsFile: null,
-            assignmentsFile: null
+            transactionsFile: undefined as File | undefined,
+            assignmentsFile: undefined as File | undefined
         }
     },
     computed: {
         filesIncomplete() {
-            return this.$data.transactionsFile == null || this.$data.assignmentsFile == null;
+            return this.$data.transactionsFile == undefined || this.$data.assignmentsFile == undefined;
         }
     },
     mounted() {
         this.$store.commit(TITLE, "Settings")
     },
     methods: {
-        gotAssignments(e) {
-            this.$data.assignmentsFile = e.target.files[0];
+        gotAssignments(e : Event) {
+            const input = (<HTMLInputElement>e.target);
+            if(input.files != null)
+                this.$data.assignmentsFile = input.files[0];
         },
-        gotTransactions(e) {
-            this.$data.transactionsFile = e.target.files[0];
+        gotTransactions(e : Event) {
+            const input = (<HTMLInputElement>e.target);
+            if(input.files != null)
+                this.$data.transactionsFile = input.files[0];
         },
         deleteBudget() {
             fetch("/api/v1/budget/" + this.$store.getters.CurrentBudget.ID, {
@@ -47,6 +51,9 @@ export default defineComponent({
             // <a href="/budget/{{.Budget.ID}}/settings/clean-negative">Fix all historic negative category-balances</a>
         },
         ynabImport() {
+            if (this.$data.transactionsFile == undefined || this.$data.assignmentsFile == undefined)
+                return
+
             let formData = new FormData();
             formData.append("transactions", this.$data.transactionsFile);
             formData.append("assignments", this.$data.assignmentsFile);