diff --git a/packages/frontend/src/components/MkDrive.vue b/packages/frontend/src/components/MkDrive.vue
index dfa4b9da4b..d98247289f 100644
--- a/packages/frontend/src/components/MkDrive.vue
+++ b/packages/frontend/src/components/MkDrive.vue
@@ -326,6 +326,7 @@ function createFolder() {
 		title: i18n.ts.createFolder,
 		placeholder: i18n.ts.folderName,
 		default: 'Untitled',
+		minLength: 1,
 	}).then(({ canceled, result: name }) => {
 		if (canceled) return;
 		misskeyApi('drive/folders/create', {