diff --git a/frontend/components/organisms/labels/LabelImportForm.vue b/frontend/components/organisms/labels/LabelImportForm.vue
index 41c655b3..8c79259c 100644
--- a/frontend/components/organisms/labels/LabelImportForm.vue
+++ b/frontend/components/organisms/labels/LabelImportForm.vue
@@ -32,7 +32,7 @@
         <h2>{{ $t('labels.importMessage2') }}</h2>
         <v-file-input
           v-model="file"
-          :rules="uploadFileRules($t('rules.uploadFileRules'))"
+          :rules="uploadSingleFileRules($t('rules.uploadFileRules'))"
           accept=".json"
           :label="$t('labels.filePlaceholder')"
         />
@@ -43,7 +43,7 @@
 
 <script>
 import BaseCard from '@/components/molecules/BaseCard'
-import { uploadFileRules } from '@/rules/index'
+import { uploadSingleFileRules } from '@/rules/index'
 
 export default {
   components: {
@@ -60,7 +60,7 @@ export default {
     return {
       valid: false,
       file: null,
-      uploadFileRules,
+      uploadSingleFileRules,
       showError: false
     }
   },
diff --git a/frontend/rules/index.js b/frontend/rules/index.js
index edaad7e8..07b69a09 100644
--- a/frontend/rules/index.js
+++ b/frontend/rules/index.js
@@ -61,6 +61,13 @@ export const uploadFileRules = (msg) => {
   ]
 }
 
+export const uploadSingleFileRules = (msg) => {
+  return [
+    v => !!v || msg.fileRequired,
+    v => !v || v.size < 1000000 || msg.fileLessThan1MB
+  ]
+}
+
 // Rules for user.
 export const passwordRules = (msg) => {
   return [