diff --git a/src/file.ts b/src/file.ts
index cfcc418..679f154 100644
--- a/src/file.ts
+++ b/src/file.ts
@@ -78,7 +78,7 @@ const getApiAuth = async (type: FileType, index: number): Promise<string> => {
     // force to retrieve the MAGIC
     switch (type) {
       case 'midi': {
-        const el = document.querySelectorAll('.SD7H- > button')[3] as HTMLButtonElement
+        const el = document.querySelectorAll('.uPjTb > button')[3] as HTMLButtonElement
         el.click()
         break
       }
diff --git a/src/scoreinfo.ts b/src/scoreinfo.ts
index 5f59881..4d99ec1 100644
--- a/src/scoreinfo.ts
+++ b/src/scoreinfo.ts
@@ -106,7 +106,7 @@ export class SheetInfoInPage extends SheetInfo {
   constructor (private document: Document) { super() }
 
   get pageCount (): number {
-    return this.document.querySelectorAll('.gXB83').length
+    return this.document.querySelectorAll('._2uWw4').length
   }
 
   get thumbnailUrl (): string {