diff --git a/src/plugins/user/components/settings/MainUserSettings.vue b/src/plugins/user/components/settings/MainUserSettings.vue
index 1915857..aabaf15 100644
--- a/src/plugins/user/components/settings/MainUserSettings.vue
+++ b/src/plugins/user/components/settings/MainUserSettings.vue
@@ -38,7 +38,7 @@
         class="col-xs-12 col-sm-6 q-pa-sm"
         label="Benutzername"
         :readonly="!newUser"
-        :rules="[isUIDUsed, notEmpty]"
+        :rules="[isFreeUID, notEmpty]"
         autocomplete="username"
         filled
       />
@@ -183,9 +183,9 @@ export default defineComponent({
       newPassword.value = '';
     }
 
-    function isUIDUsed(val: string) {
+    function isFreeUID(val: string) {
       return (
-        userStore.users.findIndex((user) => user.userid === val) !== -1 ||
+        userStore.users.findIndex((user) => user.userid === val) === -1 ||
         'Benutzername ist schon vergeben'
       );
     }
@@ -196,7 +196,7 @@ export default defineComponent({
       canSetRoles,
       isCurrentUser,
       isEmail,
-      isUIDUsed,
+      isFreeUID,
       newPassword,
       notEmpty,
       onAvatarRejected,
diff --git a/src/plugins/user/components/settings/RoleSettings.vue b/src/plugins/user/components/settings/RoleSettings.vue
index 87d69f3..7e405f4 100644
--- a/src/plugins/user/components/settings/RoleSettings.vue
+++ b/src/plugins/user/components/settings/RoleSettings.vue
@@ -30,7 +30,7 @@
               :options="permissions"
               color="primary"
               type="checkbox"
-              @input="updatePermissions"
+              @update:modelValue="updatePermissions"
             />
           </q-scroll-area>
         </q-card-section>