diff --git a/src/components/Profile/ProfileForm.vue b/src/components/Profile/ProfileForm.vue
index ac78250..1bca836 100644
--- a/src/components/Profile/ProfileForm.vue
+++ b/src/components/Profile/ProfileForm.vue
@@ -86,7 +86,7 @@ const avatarUrl = computed(() => {
         </div>
       </div>
       <div class="ts-wrap has-top-spaced is-end-aligned">
-        <button class="ts-button" type="submit">更新</button>
+        <button class="ts-button" :disabled="!(avatarFile && avatarError === '')" type="submit">更新</button>
       </div>
     </fieldset>
   </form>