diff --git a/frontend/src/lib/components/ui/InputCheckbox.vue b/frontend/src/lib/components/ui/InputCheckbox.vue
index 50e4edc58..3e9298d1b 100644
--- a/frontend/src/lib/components/ui/InputCheckbox.vue
+++ b/frontend/src/lib/components/ui/InputCheckbox.vue
@@ -4,14 +4,14 @@ import { type ValidationRule } from "@vuelidate/core";
 import { useValidation } from "~/lib/composables/useValidationHelpers";
 
 const emit = defineEmits<{
-  (e: "update:modelValue", value: boolean | boolean[]): void;
+  (e: "update:modelValue", value: boolean | boolean[] | undefined): void;
 }>();
 const internalVal = computed({
   get: () => props.modelValue,
   set: (val) => emit("update:modelValue", val),
 });
 const props = defineProps<{
-  modelValue: boolean | boolean[];
+  modelValue?: boolean | boolean[];
   label?: string;
   disabled?: boolean;
   errorMessages?: string[];