diff --git a/frontend/src/certs/NewRegister/RegisterPreview.tsx b/frontend/src/certs/NewRegister/RegisterPreview.tsx
index dfe7937..c21e536 100644
--- a/frontend/src/certs/NewRegister/RegisterPreview.tsx
+++ b/frontend/src/certs/NewRegister/RegisterPreview.tsx
@@ -4,6 +4,7 @@ import { XIcon } from "../../icons/XIcon";
 import { allCourses } from "../../utils/allCourses";
 import { RegisterBatchCreate } from "../../types/Register";
 import { RegistrationPreview } from ".";
+import { loadCustomLabels } from "../../utils/allCustomLabels";
 
 
 function isoDateToLocalDate(date: string): string {
@@ -13,16 +14,19 @@ function isoDateToLocalDate(date: string): string {
 
 export function RegisterPreview(props: {selections: Array<RegistrationPreview>, personId: number | null, onDelete: (v: number) => void, onRegister: () => void}) {
     const submit = async() => {
-        const registers: RegisterBatchCreate = props.selections.map(({courseId, date}) => ({
+        const registers: RegisterBatchCreate = props.selections.map(({courseId, date, customLabel}) => ({
             person_id: props.personId!,
             course_id: courseId,
             date,
+            custom_label: customLabel,
         }));
 
         const result = await createRegisters(registers);
 
         if (result === null) {
             console.log("Create register: success");
+            // Custom labels may have changed, reload them
+            loadCustomLabels();
         } else {
             console.log(`error. ${result}`);
         }
diff --git a/frontend/src/types/Register.ts b/frontend/src/types/Register.ts
index f9b540e..3bef655 100644
--- a/frontend/src/types/Register.ts
+++ b/frontend/src/types/Register.ts
@@ -5,6 +5,10 @@ export type RegisterBatchCreate = Array<{
      * YYYY-MM-DD
      */
     date: string,
+    /**
+     * Value of the custom label
+     */
+    custom_label: string,
 }>
 
 export type Register = {
diff --git a/frontend/src/utils/allCustomLabels.ts b/frontend/src/utils/allCustomLabels.ts
index e18fd04..f5d4c50 100644
--- a/frontend/src/utils/allCustomLabels.ts
+++ b/frontend/src/utils/allCustomLabels.ts
@@ -5,8 +5,7 @@ type CustomLabelsMap = {[k: number]: CustomLabel};
 
 export const [customLabelsMap, setCustomLabelsMap] = createSignal<{[k: number]: CustomLabel}>({});
 
-(() => {
-    // Get all labels from the API
+export function loadCustomLabels() {
     fetch(`${import.meta.env.VITE_BACKEND_URL}/api/label`)
         .then((res) => res.json())
         .then((data: Array<CustomLabel>) => {
@@ -16,4 +15,7 @@ export const [customLabelsMap, setCustomLabelsMap] = createSignal<{[k: number]:
             }
             setCustomLabelsMap(map);
         });
-})();
+}
+
+loadCustomLabels();
+