diff --git a/app/src/main/java/io/legado/app/model/localBook/EPUBFile.kt b/app/src/main/java/io/legado/app/model/localBook/EpubFile.kt
similarity index 98%
rename from app/src/main/java/io/legado/app/model/localBook/EPUBFile.kt
rename to app/src/main/java/io/legado/app/model/localBook/EpubFile.kt
index 680887e98..c8cb1e297 100644
--- a/app/src/main/java/io/legado/app/model/localBook/EPUBFile.kt
+++ b/app/src/main/java/io/legado/app/model/localBook/EpubFile.kt
@@ -26,15 +26,15 @@ import java.util.*
 import java.util.zip.ZipEntry
 import java.util.zip.ZipInputStream
 
-class EPUBFile(var book: Book) {
+class EpubFile(var book: Book) {
 
     companion object {
-        private var eFile: EPUBFile? = null
+        private var eFile: EpubFile? = null
 
         @Synchronized
-        private fun getEFile(book: Book): EPUBFile {
+        private fun getEFile(book: Book): EpubFile {
             if (eFile == null || eFile?.book?.bookUrl != book.bookUrl) {
-                eFile = EPUBFile(book)
+                eFile = EpubFile(book)
                 return eFile!!
             }
             eFile?.book = book
diff --git a/app/src/main/java/io/legado/app/model/localBook/LocalBook.kt b/app/src/main/java/io/legado/app/model/localBook/LocalBook.kt
index e65eaa7b1..19e293b2b 100644
--- a/app/src/main/java/io/legado/app/model/localBook/LocalBook.kt
+++ b/app/src/main/java/io/legado/app/model/localBook/LocalBook.kt
@@ -22,7 +22,7 @@ object LocalBook {
 
     fun getChapterList(book: Book): ArrayList<BookChapter> {
         return if (book.isEpub()) {
-            EPUBFile.getChapterList(book)
+            EpubFile.getChapterList(book)
         } else {
             AnalyzeTxtFile().analyze(book)
         }
@@ -30,7 +30,7 @@ object LocalBook {
 
     fun getContext(book: Book, chapter: BookChapter): String? {
         return if (book.isEpub()) {
-            EPUBFile.getContent(book, chapter)
+            EpubFile.getContent(book, chapter)
         } else {
             AnalyzeTxtFile.getContent(book, chapter)
         }
@@ -83,7 +83,7 @@ object LocalBook {
                 "${MD5Utils.md5Encode16(path)}.jpg"
             )
         )
-        if (book.isEpub()) EPUBFile.upBookInfo(book)
+        if (book.isEpub()) EpubFile.upBookInfo(book)
         appDb.bookDao.insert(book)
         return book
     }
diff --git a/app/src/main/java/io/legado/app/ui/book/read/page/provider/ImageProvider.kt b/app/src/main/java/io/legado/app/ui/book/read/page/provider/ImageProvider.kt
index c124d48a6..88bea027c 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/page/provider/ImageProvider.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/page/provider/ImageProvider.kt
@@ -3,7 +3,7 @@ package io.legado.app.ui.book.read.page.provider
 import android.graphics.Bitmap
 import io.legado.app.data.entities.Book
 import io.legado.app.help.BookHelp
-import io.legado.app.model.localBook.EPUBFile
+import io.legado.app.model.localBook.EpubFile
 import io.legado.app.utils.BitmapUtils
 import io.legado.app.utils.FileUtils
 import kotlinx.coroutines.runBlocking
@@ -36,7 +36,7 @@ object ImageProvider {
         val vFile = BookHelp.getImage(book, src)
         if (!vFile.exists()) {
             if (book.isEpub()) {
-                EPUBFile.getImage(book, src)?.use { input ->
+                EpubFile.getImage(book, src)?.use { input ->
                     val newFile = FileUtils.createFileIfNotExist(vFile.absolutePath)
                     FileOutputStream(newFile).use { output ->
                         input.copyTo(output)